20000122020979 has 2 divisors, whose sum is σ = 20000122020980. Its totient is φ = 20000122020978.

The previous prime is 20000122020971. The next prime is 20000122021013. The reversal of 20000122020979 is 97902022100002.

It is an a-pointer prime, because the next prime (20000122021013) can be obtained adding 20000122020979 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20000122020979 - 2³ = 20000122020971 is a prime.

It is a super-2 number, since 2×20000122020979² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20000122020971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000061010489 + 10000061010490.

It is an arithmetic number, because the mean of its divisors is an integer number (10000061010490).

Almost surely, 2^{20000122020979} is an apocalyptic number.

20000122020979 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000122020979 is an equidigital number, since it uses as much as digits as its factorization.

20000122020979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The spelling of 20000122020979 in words is "twenty trillion, one hundred twenty-two million, twenty thousand, nine hundred seventy-nine".