EXHIBIT 32.1

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER

PURSUANT TO 18 U.S.C. 1350

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I, Keith A. Meister, Principal Executive Officer of American Property Investors, Inc., the General Partner of American Real Estate Partners, L.P. (the “Registrant”), certify that to the best of my knowledge, based upon a review of the Registrant’s annual report on Form 10-K/A (Amendment No. 1) for the period ended December 31, 2005 (the “Report”):

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant.

/s/ Keith A. Meister

Keith A. Meister

Principal Executive Officer and

Vice Chairman of the Board of

American Property Investors, Inc.,

the General Partner of

American Real Estate Partners, L.P.

Date: March 31, 2006