122316386681 has 2 divisors, whose sum is σ = 122316386682. Its totient is φ = 122316386680.

The previous prime is 122316386677. The next prime is 122316386737. The reversal of 122316386681 is 186683613221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94013371456 + 28303015225 = 306616^2 + 168235^2 .

It is a cyclic number.

It is not a de Polignac number, because 122316386681 - 2² = 122316386677 is a prime.

It is a super-2 number, since 2×122316386681² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (122316386081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61158193340 + 61158193341.

It is an arithmetic number, because the mean of its divisors is an integer number (61158193341).

Almost surely, 2^122316386681 is an apocalyptic number.

It is an amenable number.

122316386681 is a deficient number, since it is larger than the sum of its proper divisors (1).

122316386681 is an equidigital number, since it uses as much as digits as its factorization.

122316386681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 497664, while the sum is 47.

The spelling of 122316386681 in words is "one hundred twenty-two billion, three hundred sixteen million, three hundred eighty-six thousand, six hundred eighty-one".