22021210979 has 2 divisors, whose sum is σ = 22021210980. Its totient is φ = 22021210978.

The previous prime is 22021210973. The next prime is 22021211029. The reversal of 22021210979 is 97901212022.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22021210979 is a prime.

It is not a weakly prime, because it can be changed into another prime (22021210973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11010605489 + 11010605490.

It is an arithmetic number, because the mean of its divisors is an integer number (11010605490).

Almost surely, 2^22021210979 is an apocalyptic number.

22021210979 is a deficient number, since it is larger than the sum of its proper divisors (1).

22021210979 is an equidigital number, since it uses as much as digits as its factorization.

22021210979 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 35.

The spelling of 22021210979 in words is "twenty-two billion, twenty-one million, two hundred ten thousand, nine hundred seventy-nine".