100123012120 has 32 divisors (see below), whose sum is σ = 235071421920. Its totient is φ = 38307934720.

The previous prime is 100123012109. The next prime is 100123012159. The reversal of 100123012120 is 21210321001.

It is a self number, because there is not a number n which added to its sum of digits gives 100123012120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54413761 + ... + 54415600.

It is an arithmetic number, because the mean of its divisors is an integer number (7345981935).

Almost surely, 2^100123012120 is an apocalyptic number.

100123012120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100123012120 is an abundant number, since it is smaller than the sum of its proper divisors (134948409800).

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

100123012120 is a wasteful number, since it uses less digits than its factorization.

100123012120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108829395 (or 108829391 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 100123012120 its reverse (21210321001), we get a palindrome (121333333121).

The spelling of 100123012120 in words is "one hundred billion, one hundred twenty-three million, twelve thousand, one hundred twenty".