112111109979 has 12 divisors (see below), whose sum is σ = 164306090088. Its totient is φ = 67946127040.

The previous prime is 112111109921. The next prime is 112111110011. The reversal of 112111109979 is 979901111211.

It is a happy number.

It is not a de Polignac number, because 112111109979 - 2¹⁷ = 112110978907 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 112111109979.

It is not an unprimeable number, because it can be changed into a prime (112111109779) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 154422654 + ... + 154423379.

It is an arithmetic number, because the mean of its divisors is an integer number (13692174174).

Almost surely, 2^112111109979 is an apocalyptic number.

112111109979 is a deficient number, since it is larger than the sum of its proper divisors (52194980109).

112111109979 is a wasteful number, since it uses less digits than its factorization.

112111109979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308846058 (or 308846047 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 42.

The spelling of 112111109979 in words is "one hundred twelve billion, one hundred eleven million, one hundred nine thousand, nine hundred seventy-nine".