22212109979 has 2 divisors, whose sum is σ = 22212109980. Its totient is φ = 22212109978.

The previous prime is 22212109973. The next prime is 22212110017. The reversal of 22212109979 is 97990121222.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22212109979 - 2⁴ = 22212109963 is a prime.

It is not a weakly prime, because it can be changed into another prime (22212109973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11106054989 + 11106054990.

It is an arithmetic number, because the mean of its divisors is an integer number (11106054990).

Almost surely, 2^22212109979 is an apocalyptic number.

22212109979 is a deficient number, since it is larger than the sum of its proper divisors (1).

22212109979 is an equidigital number, since it uses as much as digits as its factorization.

22212109979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 44.

The spelling of 22212109979 in words is "twenty-two billion, two hundred twelve million, one hundred nine thousand, nine hundred seventy-nine".