123012313220100 has 72 divisors (see below), whose sum is σ = 355916766362080. Its totient is φ = 32803178446080.

The previous prime is 123012313220051. The next prime is 123012313220129. The reversal of 123012313220100 is 1022313210321.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 152865399 + ... + 153668001.

Almost surely, 2^{123012313220100} is an apocalyptic number.

123012313220100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123012313220100 is an abundant number, since it is smaller than the sum of its proper divisors (232904453141980).

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

123012313220100 is a wasteful number, since it uses less digits than its factorization.

123012313220100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313509 (or 1313502 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 123012313220100 its reverse (1022313210321), we get a palindrome (124034626430421).

The spelling of 123012313220100 in words is "one hundred twenty-three trillion, twelve billion, three hundred thirteen million, two hundred twenty thousand, one hundred".