Attached files

file filename
10-K - 10-K - SIMON PROPERTY GROUP INC /DE/a2227275z10-k.htm
10-K - 10-K PDF - SIMON PROPERTY GROUP INC /DE/a2227275zf1_10-14.pdf
EX-12.1 - EX-12.1 - SIMON PROPERTY GROUP INC /DE/a2227275zex-12_1.htm
EX-12.1 - EX-12.1 PDF - SIMON PROPERTY GROUP INC /DE/a2227275zf3_ex-1214.pdf
EX-21.1 - EX-21.1 PDF - SIMON PROPERTY GROUP INC /DE/a2227275zf5_ex-2114.pdf
EX-23.1 - EX-23.1 - SIMON PROPERTY GROUP INC /DE/a2227275zex-23_1.htm
EX-23.1 - EX-23.1 PDF - SIMON PROPERTY GROUP INC /DE/a2227275zf7_ex-2314.pdf
EX-31.1 - EX-31.1 - SIMON PROPERTY GROUP INC /DE/a2227275zex-31_1.htm
EX-31.1 - EX-31.1 PDF - SIMON PROPERTY GROUP INC /DE/a2227275zf9_ex-3114.pdf
EX-31.2 - EX-31.2 - SIMON PROPERTY GROUP INC /DE/a2227275zex-31_2.htm
EX-31.2 - EX-31.2 PDF - SIMON PROPERTY GROUP INC /DE/a2227275zf11_ex-3114.pdf
EX-32 - EX-32 - SIMON PROPERTY GROUP INC /DE/a2227275zex-32.htm
EX-32 - EX-32 PDF - SIMON PROPERTY GROUP INC /DE/a2227275zf13_ex-14.pdf

QuickLinks -- Click here to rapidly navigate through this document


Exhibit 21.1

List of Subsidiaries of Simon Property Group, Inc.

Subsidiary
  Jurisdiction
Simon Property Group, L.P.    Delaware
The Retail Property Trust   Massachusetts
Simon Property Group (Illinois), L.P.    Illinois
Simon Property Group (Texas), L.P.    Texas
M.S. Management Associates, Inc.    Delaware
Bridgewood Insurance Company, Ltd.    Bermuda
Simon Property Group Administrative Services Partnership, L.P.    Delaware
Kravco Simon Investments, L.P.    Pennsylvania
Simon Management Associates II, LLC   Delaware
Simon Management Associates, LLC   Delaware
CPG Partners, L.P.    Delaware
Prime Retail, L.P.    Delaware
SPG Mayflower, LLC   Delaware
Simon KP I S.a.r.l.    Luxembourg
Simon KP II S.a.r.l.    Luxembourg
Simon-Mills I, LLC   Delaware

Omits names of subsidiaries that as of December 31, 2015 were not, in the aggregate, a "significant subsidiary."




QuickLinks

List of Subsidiaries of Simon Property Group, Inc.