22121002940879 has 2 divisors, whose sum is σ = 22121002940880. Its totient is φ = 22121002940878.

The previous prime is 22121002940807. The next prime is 22121002940923. The reversal of 22121002940879 is 97804920012122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22121002940879 - 2³² = 22116707973583 is a prime.

It is a super-2 number, since 2×22121002940879² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22121002940779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060501470439 + 11060501470440.

It is an arithmetic number, because the mean of its divisors is an integer number (11060501470440).

Almost surely, 2^{22121002940879} is an apocalyptic number.

22121002940879 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121002940879 is an equidigital number, since it uses as much as digits as its factorization.

22121002940879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 47.

The spelling of 22121002940879 in words is "twenty-two trillion, one hundred twenty-one billion, two million, nine hundred forty thousand, eight hundred seventy-nine".