22122109957 has 2 divisors, whose sum is σ = 22122109958. Its totient is φ = 22122109956.

The previous prime is 22122109943. The next prime is 22122109973. The reversal of 22122109957 is 75990122122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14372652996 + 7749456961 = 119886^2 + 88031^2 .

It is a cyclic number.

It is not a de Polignac number, because 22122109957 - 2⁷ = 22122109829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22122106957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11061054978 + 11061054979.

It is an arithmetic number, because the mean of its divisors is an integer number (11061054979).

Almost surely, 2^22122109957 is an apocalyptic number.

It is an amenable number.

22122109957 is a deficient number, since it is larger than the sum of its proper divisors (1).

22122109957 is an equidigital number, since it uses as much as digits as its factorization.

22122109957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 40.

The spelling of 22122109957 in words is "twenty-two billion, one hundred twenty-two million, one hundred nine thousand, nine hundred fifty-seven".