20012229979 has 16 divisors (see below), whose sum is σ = 22952107008. Its totient is φ = 17092680192.

The previous prime is 20012229973. The next prime is 20012229989. The reversal of 20012229979 is 97992221002.

It is not a de Polignac number, because 20012229979 - 2⁵ = 20012229947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20012229973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4280187 + ... + 4284859.

It is an arithmetic number, because the mean of its divisors is an integer number (1434506688).

Almost surely, 2^20012229979 is an apocalyptic number.

20012229979 is a deficient number, since it is larger than the sum of its proper divisors (2939877029).

20012229979 is a wasteful number, since it uses less digits than its factorization.

20012229979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6714.

The product of its (nonzero) digits is 81648, while the sum is 43.

The spelling of 20012229979 in words is "twenty billion, twelve million, two hundred twenty-nine thousand, nine hundred seventy-nine".