20112119979 has 16 divisors (see below), whose sum is σ = 30852729600. Its totient is φ = 11415506400.

The previous prime is 20112119969. The next prime is 20112119981. The reversal of 20112119979 is 97991121102.

It is not a de Polignac number, because 20112119979 - 2¹¹ = 20112117931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20112119979.

It is not an unprimeable number, because it can be changed into a prime (20112119969) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3210697 + ... + 3216954.

It is an arithmetic number, because the mean of its divisors is an integer number (1928295600).

Almost surely, 2^20112119979 is an apocalyptic number.

20112119979 is a deficient number, since it is larger than the sum of its proper divisors (10740609621).

20112119979 is a wasteful number, since it uses less digits than its factorization.

20112119979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6427810.

The product of its (nonzero) digits is 20412, while the sum is 42.

The spelling of 20112119979 in words is "twenty billion, one hundred twelve million, one hundred nineteen thousand, nine hundred seventy-nine".