<SEC-DOCUMENT>0000894245-22-000099-index.html : 20220811 <SEC-HEADER>0000894245-22-000099.hdr.sgml : 20220811 <ACCEPTANCE-DATETIME>20220810184724 ACCESSION NUMBER: 0000894245-22-000099 CONFORMED SUBMISSION TYPE: 10-Q PUBLIC DOCUMENT COUNT: 32 CONFORMED PERIOD OF REPORT: 20220630 FILED AS OF DATE: 20220811 DATE AS OF CHANGE: 20220810 FILER: COMPANY DATA: COMPANY CONFORMED NAME: AEI INCOME & GROWTH FUND XXI LTD PARTNERSHIP CENTRAL INDEX KEY: 0000931755 STANDARD INDUSTRIAL CLASSIFICATION: REAL ESTATE [6500] IRS NUMBER: 411789725 STATE OF INCORPORATION: MN FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 10-Q SEC ACT: 1934 Act SEC FILE NUMBER: 033-85076 FILM NUMBER: 221153134 BUSINESS ADDRESS: STREET 1: 30 EAST 7TH ST SUITE 1300 CITY: ST PAUL STATE: MN ZIP: 55101 BUSINESS PHONE: 6512277333 MAIL ADDRESS: STREET 1: 30 EAST 7TH ST SUITE 1300 CITY: ST PAUL STATE: MN ZIP: 55101 </SEC-HEADER> <DOCUMENT> <TYPE>10-Q <SEQUENCE>1 <FILENAME>aei21-20220630.htm <DESCRIPTION>INLINE XBRL DOCUMENT <TEXT> Document 1 - file: aei21-20220630.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-31.1 <SEQUENCE>2 <FILENAME>ex31-1xxi.htm <DESCRIPTION>EX-31.1 <TEXT> Document 2 - file: ex31-1xxi.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-31.2 <SEQUENCE>3 <FILENAME>ex31-2xxi.htm <DESCRIPTION>EX-31.2 <TEXT> Document 3 - file: ex31-2xxi.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-32 <SEQUENCE>4 <FILENAME>ex32xxi.htm <DESCRIPTION>SECTION 1350 CERTIFICATIONS <TEXT> Document 4 - file: ex32xxi.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.CAL <SEQUENCE>5 <FILENAME>aei21-20220630_cal.xml <DESCRIPTION>XBRL TAXONOMY EXTENSION - CALCULATION LINKBASE DOCUMENT <TEXT> Document 5 - file: aei21-20220630_cal.xml
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.DEF <SEQUENCE>6 <FILENAME>aei21-20220630_def.xml <DESCRIPTION>XBRL TAXONOMY EXTENSION - DEFINITION LINKBASE <TEXT> Document 6 - file: aei21-20220630_def.xml
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.LAB <SEQUENCE>7 <FILENAME>aei21-20220630_lab.xml <DESCRIPTION>XBRL TAXONOMY EXTENSION - LABEL LINKBASE <TEXT> Document 7 - file: aei21-20220630_lab.xml
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.PRE <SEQUENCE>8 <FILENAME>aei21-20220630_pre.xml <DESCRIPTION>XBRL TAXONOMY EXTENSION - PRESENTATION LINKBASE <TEXT> Document 8 - file: aei21-20220630_pre.xml
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.SCH <SEQUENCE>9 <FILENAME>aei21-20220630.xsd <DESCRIPTION>XBRL TAXONOMY EXTENSION - SCHEMA <TEXT> Document 9 - file: aei21-20220630.xsd
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>10 <FILENAME>R1.htm <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 10 - file: R1.htm
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>11 <FILENAME>R2.htm <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 11 - file: R2.htm
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>12 <FILENAME>R3.htm <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 12 - file: R3.htm
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>13 <FILENAME>R4.htm <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 13 - file: R4.htm
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>14 <FILENAME>R5.htm <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 14 - file: R5.htm
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>15 <FILENAME>R6.htm <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 15 - file: R6.htm
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>16 <FILENAME>R7.htm <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 16 - file: R7.htm
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>17 <FILENAME>R8.htm <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 17 - file: R8.htm
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>18 <FILENAME>R9.htm <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 18 - file: R9.htm
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>19 <FILENAME>R10.htm <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 19 - file: R10.htm
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>20 <FILENAME>R11.htm <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 20 - file: R11.htm
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>21 <FILENAME>R12.htm <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 21 - file: R12.htm
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>22 <FILENAME>R13.htm <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 22 - file: R13.htm
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>23 <FILENAME>R14.htm <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 23 - file: R14.htm
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>24 <FILENAME>R15.htm <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 24 - file: R15.htm
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>25 <FILENAME>R16.htm <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 25 - file: R16.htm
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>26 <FILENAME>aei21-20220630_htm.xml <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 26 - file: aei21-20220630_htm.html
Document 26 - RAW XML: aei21-20220630_htm.xml
</DOCUMENT> <DOCUMENT> <TYPE>EXCEL <SEQUENCE>27 <FILENAME>Financial_Report.xlsx <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 27 - file: Financial_Report.xlsx
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>28 <FILENAME>Show.js <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 28 - file: Show.js
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>29 <FILENAME>report.css <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 29 - file: report.css
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>30 <FILENAME>FilingSummary.xml <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 30 - file: FilingSummary.html
Document 30 - RAW XML: FilingSummary.xml
</DOCUMENT> <DOCUMENT> <TYPE>JSON <SEQUENCE>32 <FILENAME>MetaLinks.json <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 32 - file: MetaLinks.json
</DOCUMENT> <DOCUMENT> <TYPE>ZIP <SEQUENCE>33 <FILENAME>0000894245-22-000099-xbrl.zip <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 33 - file: 0000894245-22-000099-xbrl.zip
</DOCUMENT> </SEC-DOCUMENT>