22172111057779 has 2 divisors, whose sum is σ = 22172111057780. Its totient is φ = 22172111057778.

The previous prime is 22172111057647. The next prime is 22172111057783. The reversal of 22172111057779 is 97775011127122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22172111057779 - 2¹³ = 22172111049587 is a prime.

It is not a weakly prime, because it can be changed into another prime (22172111057479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11086055528889 + 11086055528890.

It is an arithmetic number, because the mean of its divisors is an integer number (11086055528890).

Almost surely, 2^{22172111057779} is an apocalyptic number.

22172111057779 is a deficient number, since it is larger than the sum of its proper divisors (1).

22172111057779 is an equidigital number, since it uses as much as digits as its factorization.

22172111057779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864360, while the sum is 52.

The spelling of 22172111057779 in words is "twenty-two trillion, one hundred seventy-two billion, one hundred eleven million, fifty-seven thousand, seven hundred seventy-nine".