13121520113 has 32 divisors (see below), whose sum is σ = 14592614400. Its totient is φ = 11723088960.

The previous prime is 13121520067. The next prime is 13121520151. The reversal of 13121520113 is 31102512131.

It is a cyclic number.

It is not a de Polignac number, because 13121520113 - 2⁸ = 13121519857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13121526113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37814006 + ... + 37814352.

It is an arithmetic number, because the mean of its divisors is an integer number (456019200).

Almost surely, 2^13121520113 is an apocalyptic number.

13121520113 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13121520113 is a deficient number, since it is larger than the sum of its proper divisors (1471094287).

13121520113 is a wasteful number, since it uses less digits than its factorization.

13121520113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917.

The product of its (nonzero) digits is 180, while the sum is 20.

The spelling of 13121520113 in words is "thirteen billion, one hundred twenty-one million, five hundred twenty thousand, one hundred thirteen".