20210021122012 has 12 divisors (see below), whose sum is σ = 35394932431096. Its totient is φ = 10097183284560.

The previous prime is 20210021121947. The next prime is 20210021122051. The reversal of 20210021122012 is 21022112001202.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1956813303 + ... + 1956823630.

Almost surely, 2^{20210021122012} is an apocalyptic number.

It is an amenable number.

20210021122012 is a deficient number, since it is larger than the sum of its proper divisors (15184911309084).

20210021122012 is a wasteful number, since it uses less digits than its factorization.

20210021122012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3913638228 (or 3913638226 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20210021122012 its reverse (21022112001202), we get a palindrome (41232133123214).

The spelling of 20210021122012 in words is "twenty trillion, two hundred ten billion, twenty-one million, one hundred twenty-two thousand, twelve".