22101979 has 2 divisors, whose sum is σ = 22101980. Its totient is φ = 22101978.

The previous prime is 22101967. The next prime is 22102013. The reversal of 22101979 is 97910122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22101979 - 2⁹ = 22101467 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22101979.

It is not a weakly prime, because it can be changed into another prime (22101679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11050989 + 11050990.

It is an arithmetic number, because the mean of its divisors is an integer number (11050990).

Almost surely, 2^22101979 is an apocalyptic number.

22101979 is a deficient number, since it is larger than the sum of its proper divisors (1).

22101979 is an equidigital number, since it uses as much as digits as its factorization.

22101979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 22101979 is about 4701.2741889832. The cubic root of 22101979 is about 280.6362190973.

The spelling of 22101979 in words is "twenty-two million, one hundred one thousand, nine hundred seventy-nine".