111920121313 has 64 divisors (see below), whose sum is σ = 158359670784. Its totient is φ = 76237920000.

The previous prime is 111920121311. The next prime is 111920121323. The reversal of 111920121313 is 313121029111.

It is not a de Polignac number, because 111920121313 - 2¹ = 111920121311 is a prime.

It is a super-2 number, since 2×111920121313² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111920121311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2301258 + ... + 2349388.

It is an arithmetic number, because the mean of its divisors is an integer number (2474369856).

Almost surely, 2^111920121313 is an apocalyptic number.

111920121313 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

111920121313 is a deficient number, since it is larger than the sum of its proper divisors (46439549471).

111920121313 is a wasteful number, since it uses less digits than its factorization.

111920121313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48286.

The product of its (nonzero) digits is 324, while the sum is 25.

The spelling of 111920121313 in words is "one hundred eleven billion, nine hundred twenty million, one hundred twenty-one thousand, three hundred thirteen".