20331131202012 has 96 divisors (see below), whose sum is σ = 53358609427200. Its totient is φ = 5987251510272.

The previous prime is 20331131201987. The next prime is 20331131202017. The reversal of 20331131202012 is 21020213113302.

It is a super-4 number, since 4×20331131202012⁴ (a number of 54 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20331131202012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331131202017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23638938 + ... + 24483905.

It is an arithmetic number, because the mean of its divisors is an integer number (555818848200).

Almost surely, 2^{20331131202012} is an apocalyptic number.

It is an amenable number.

20331131202012 is an abundant number, since it is smaller than the sum of its proper divisors (33027478225188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20331131202012 is a wasteful number, since it uses less digits than its factorization.

20331131202012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48122995 (or 48122993 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 20331131202012 its reverse (21020213113302), we get a palindrome (41351344315314).

The spelling of 20331131202012 in words is "twenty trillion, three hundred thirty-one billion, one hundred thirty-one million, two hundred two thousand, twelve".