123203113231212 has 72 divisors (see below), whose sum is σ = 355929982017792. Its totient is φ = 35199912636000.

The previous prime is 123203113231151. The next prime is 123203113231223. The reversal of 123203113231212 is 212132311302321.

123203113231212 is a `hidden beast` number, since 1 + 2 + 3 + 2 + 0 + 311 + 32 + 312 + 1 + 2 = 666.

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 23 ways as a sum of consecutive naturals, for example, 2339337 + ... + 15870687.

Almost surely, 2^{123203113231212} is an apocalyptic number.

123203113231212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123203113231212 is an abundant number, since it is smaller than the sum of its proper divisors (232726868786580).

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

123203113231212 is a wasteful number, since it uses less digits than its factorization.

123203113231212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13567499 (or 13567494 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 123203113231212 its reverse (212132311302321), we get a palindrome (335335424533533).

The spelling of 123203113231212 in words is "one hundred twenty-three trillion, two hundred three billion, one hundred thirteen million, two hundred thirty-one thousand, two hundred twelve".