20131113321012 has 12 divisors (see below), whose sum is σ = 46972597749056. Its totient is φ = 6710371107000.

The previous prime is 20131113320953. The next prime is 20131113321019. The reversal of 20131113321012 is 21012331113102.

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 20131113321012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20131113321019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 838796388364 + ... + 838796388387.

Almost surely, 2^{20131113321012} is an apocalyptic number.

It is an amenable number.

20131113321012 is an abundant number, since it is smaller than the sum of its proper divisors (26841484428044).

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

20131113321012 is a wasteful number, since it uses less digits than its factorization.

20131113321012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1677592776758 (or 1677592776756 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 20131113321012 its reverse (21012331113102), we get a palindrome (41143444434114).

The spelling of 20131113321012 in words is "twenty trillion, one hundred thirty-one billion, one hundred thirteen million, three hundred twenty-one thousand, twelve".