21013232131112 has 64 divisors (see below), whose sum is σ = 44921925216000. Its totient is φ = 9134862130944.

The previous prime is 21013232131103. The next prime is 21013232131127. The reversal of 21013232131112 is 21113123231012.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30392912 + ... + 31076607.

It is an arithmetic number, because the mean of its divisors is an integer number (701905081500).

Almost surely, 2^{21013232131112} is an apocalyptic number.

It is an amenable number.

21013232131112 is an abundant number, since it is smaller than the sum of its proper divisors (23908693084888).

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

21013232131112 is a wasteful number, since it uses less digits than its factorization.

21013232131112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61469730 (or 61469726 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 21013232131112 its reverse (21113123231012), we get a palindrome (42126355362124).

The spelling of 21013232131112 in words is "twenty-one trillion, thirteen billion, two hundred thirty-two million, one hundred thirty-one thousand, one hundred twelve".