20012200979 has 2 divisors, whose sum is σ = 20012200980. Its totient is φ = 20012200978.

The previous prime is 20012200963. The next prime is 20012201023. The reversal of 20012200979 is 97900221002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20012200979 - 2⁴ = 20012200963 is a prime.

It is not a weakly prime, because it can be changed into another prime (20012200919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006100489 + 10006100490.

It is an arithmetic number, because the mean of its divisors is an integer number (10006100490).

Almost surely, 2^20012200979 is an apocalyptic number.

20012200979 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012200979 is an equidigital number, since it uses as much as digits as its factorization.

20012200979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 32.

The spelling of 20012200979 in words is "twenty billion, twelve million, two hundred thousand, nine hundred seventy-nine".