13120012100 has 36 divisors (see below), whose sum is σ = 30660462084. Its totient is φ = 4844311680.

The previous prime is 13120012099. The next prime is 13120012111. The reversal of 13120012100 is 121002131.

It can be written as a sum of positive squares in 6 ways, for example, as 2738847556 + 10381164544 = 52334^2 + 101888^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5044859 + ... + 5047458.

Almost surely, 2^13120012100 is an apocalyptic number.

13120012100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13120012100 is an abundant number, since it is smaller than the sum of its proper divisors (17540449984).

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

13120012100 is a wasteful number, since it uses less digits than its factorization.

13120012100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10092344 (or 10092337 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 13120012100 its reverse (121002131), we get a palindrome (13241014231).

The spelling of 13120012100 in words is "thirteen billion, one hundred twenty million, twelve thousand, one hundred".