122157311 has 2 divisors, whose sum is σ = 122157312. Its totient is φ = 122157310.

The previous prime is 122157271. The next prime is 122157337. The reversal of 122157311 is 113751221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122157311 - 2²⁶ = 55048447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122157011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61078655 + 61078656.

It is an arithmetic number, because the mean of its divisors is an integer number (61078656).

Almost surely, 2^122157311 is an apocalyptic number.

122157311 is a deficient number, since it is larger than the sum of its proper divisors (1).

122157311 is an equidigital number, since it uses as much as digits as its factorization.

122157311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 420, while the sum is 23.

The square root of 122157311 is about 11052.4798574799. The cubic root of 122157311 is about 496.1806473773.

The spelling of 122157311 in words is "one hundred twenty-two million, one hundred fifty-seven thousand, three hundred eleven".