1012120009979 has 16 divisors (see below), whose sum is σ = 1101321906720. Its totient is φ = 924540963840.

The previous prime is 1012120009909. The next prime is 1012120009987. The reversal of 1012120009979 is 9799000212101.

It is not a de Polignac number, because 1012120009979 - 2³² = 1007825042683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012120009909) 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, 14819249 + ... + 14887389.

It is an arithmetic number, because the mean of its divisors is an integer number (68832619170).

Almost surely, 2^{1012120009979} is an apocalyptic number.

1012120009979 is a deficient number, since it is larger than the sum of its proper divisors (89201896741).

1012120009979 is a wasteful number, since it uses less digits than its factorization.

1012120009979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80030.

The product of its (nonzero) digits is 20412, while the sum is 41.

The spelling of 1012120009979 in words is "one trillion, twelve billion, one hundred twenty million, nine thousand, nine hundred seventy-nine".