112120209979 has 4 divisors (see below), whose sum is σ = 112174038376. Its totient is φ = 112066381584.

The previous prime is 112120209961. The next prime is 112120209991. The reversal of 112120209979 is 979902021211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 112120209979 - 2³⁵ = 77760471611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112120209779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26911074 + ... + 26915239.

It is an arithmetic number, because the mean of its divisors is an integer number (28043509594).

Almost surely, 2^112120209979 is an apocalyptic number.

112120209979 is a deficient number, since it is larger than the sum of its proper divisors (53828397).

112120209979 is an equidigital number, since it uses as much as digits as its factorization.

112120209979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53828396.

The product of its (nonzero) digits is 40824, while the sum is 43.

The spelling of 112120209979 in words is "one hundred twelve billion, one hundred twenty million, two hundred nine thousand, nine hundred seventy-nine".