Adding to 20212201122120 its reverse (2122110221202), we get a palindrome (22334311343322).
It is a happy number.
20212201122120 is a `hidden beast` number, since 202 + 1 + 220 + 1 + 1 + 221 + 20 = 666.
It is an unprimeable number.
Almost surely, 220212201122120 is an apocalyptic number.
20212201122120 is a gapful number since it is divisible by the number (20) 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.
20212201122120 is a wasteful number, since it uses less digits than its factorization.
20212201122120 is an odious number, because the sum of its binary digits is odd.
The spelling of 20212201122120 in words is "twenty trillion, two hundred twelve billion, two hundred one million, one hundred twenty-two thousand, one hundred twenty".