123310013112012 has 24 divisors (see below), whose sum is σ = 297004762765312. Its totient is φ = 39777423584400.

The previous prime is 123310013111977. The next prime is 123310013112049. The reversal of 123310013112012 is 210211310013321.

It is a self number, because there is not a number n which added to its sum of digits gives 123310013112012.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 165739264564 + ... + 165739265307.

Almost surely, 2^{123310013112012} is an apocalyptic number.

123310013112012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123310013112012 is an abundant number, since it is smaller than the sum of its proper divisors (173694749653300).

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

123310013112012 is a wasteful number, since it uses less digits than its factorization.

123310013112012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331478529909 (or 331478529907 counting only the distinct ones).

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

Adding to 123310013112012 its reverse (210211310013321), we get a palindrome (333521323125333).

The spelling of 123310013112012 in words is "one hundred twenty-three trillion, three hundred ten billion, thirteen million, one hundred twelve thousand, twelve".