13123112100 has 72 divisors (see below), whose sum is σ = 43393764288. Its totient is φ = 2999568000.

The previous prime is 13123112099. The next prime is 13123112129. The reversal of 13123112100 is 121132131.

It is a happy number.

It is a super-3 number, since 3×13123112100³ (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 13123112100.

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, 3122451 + ... + 3126650.

Almost surely, 2^13123112100 is an apocalyptic number.

13123112100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13123112100 is an abundant number, since it is smaller than the sum of its proper divisors (30270652188).

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

13123112100 is a wasteful number, since it uses less digits than its factorization.

13123112100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6249125 (or 6249118 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 13123112100 its reverse (121132131), we get a palindrome (13244244231).

The spelling of 13123112100 in words is "thirteen billion, one hundred twenty-three million, one hundred twelve thousand, one hundred".