It is a happy number.
Almost surely, 212020020212100 is an apocalyptic number.
12020020212100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12020020212100 is a wasteful number, since it uses less digits than its factorization.
12020020212100 is an odious number, because the sum of its binary digits is odd.
Adding to 12020020212100 its reverse (121202002021), we get a palindrome (12141222214121).
The spelling of 12020020212100 in words is "twelve trillion, twenty billion, twenty million, two hundred twelve thousand, one hundred".