122665156331 has 2 divisors, whose sum is σ = 122665156332. Its totient is φ = 122665156330.

The previous prime is 122665156301. The next prime is 122665156483. The reversal of 122665156331 is 133651566221.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122665156331 is a prime.

It is a super-2 number, since 2×122665156331² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (122665156301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61332578165 + 61332578166.

It is an arithmetic number, because the mean of its divisors is an integer number (61332578166).

Almost surely, 2^122665156331 is an apocalyptic number.

122665156331 is a deficient number, since it is larger than the sum of its proper divisors (1).

122665156331 is an equidigital number, since it uses as much as digits as its factorization.

122665156331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 194400, while the sum is 41.

The spelling of 122665156331 in words is "one hundred twenty-two billion, six hundred sixty-five million, one hundred fifty-six thousand, three hundred thirty-one".