22021212108979 has 2 divisors, whose sum is σ = 22021212108980. Its totient is φ = 22021212108978.

The previous prime is 22021212108953. The next prime is 22021212109003. The reversal of 22021212108979 is 97980121212022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22021212108979 - 2¹¹ = 22021212106931 is a prime.

It is not a weakly prime, because it can be changed into another prime (22021212108919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11010606054489 + 11010606054490.

It is an arithmetic number, because the mean of its divisors is an integer number (11010606054490).

Almost surely, 2^{22021212108979} is an apocalyptic number.

22021212108979 is a deficient number, since it is larger than the sum of its proper divisors (1).

22021212108979 is an equidigital number, since it uses as much as digits as its factorization.

22021212108979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 46.

The spelling of 22021212108979 in words is "twenty-two trillion, twenty-one billion, two hundred twelve million, one hundred eight thousand, nine hundred seventy-nine".