It is a Duffinian number.
Almost surely, 212020101121001 is an apocalyptic number.
It is an amenable number.
12020101121001 is a wasteful number, since it uses less digits than its factorization.
12020101121001 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 22262616.
Adding to 12020101121001 its reverse (10012110102021), we get a palindrome (22032211223022).
The spelling of 12020101121001 in words is "twelve trillion, twenty billion, one hundred one million, one hundred twenty-one thousand, one".