20213112231012 has 12 divisors (see below), whose sum is σ = 47163928539056. Its totient is φ = 6737704077000.

The previous prime is 20213112230963. The next prime is 20213112231017. The reversal of 20213112231012 is 21013221131202.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 20213112231012.

It is not an unprimeable number, because it can be changed into a prime (20213112231017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 842213009614 + ... + 842213009637.

Almost surely, 2^{20213112231012} is an apocalyptic number.

It is an amenable number.

20213112231012 is an abundant number, since it is smaller than the sum of its proper divisors (26950816308044).

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

20213112231012 is a wasteful number, since it uses less digits than its factorization.

20213112231012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1684426019258 (or 1684426019256 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 20213112231012 its reverse (21013221131202), we get a palindrome (41226333362214).

The spelling of 20213112231012 in words is "twenty trillion, two hundred thirteen billion, one hundred twelve million, two hundred thirty-one thousand, twelve".