122110211957 has 2 divisors, whose sum is σ = 122110211958. Its totient is φ = 122110211956.

The previous prime is 122110211947. The next prime is 122110211969. The reversal of 122110211957 is 759112011221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112460293201 + 9649918756 = 335351^2 + 98234^2 .

It is a cyclic number.

It is not a de Polignac number, because 122110211957 - 2²⁰ = 122109163381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122110211947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61055105978 + 61055105979.

It is an arithmetic number, because the mean of its divisors is an integer number (61055105979).

Almost surely, 2^122110211957 is an apocalyptic number.

It is an amenable number.

122110211957 is a deficient number, since it is larger than the sum of its proper divisors (1).

122110211957 is an equidigital number, since it uses as much as digits as its factorization.

122110211957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 32.

The spelling of 122110211957 in words is "one hundred twenty-two billion, one hundred ten million, two hundred eleven thousand, nine hundred fifty-seven".