122115315137 has 2 divisors, whose sum is σ = 122115315138. Its totient is φ = 122115315136.

The previous prime is 122115315109. The next prime is 122115315163. The reversal of 122115315137 is 731513511221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67085662081 + 55029653056 = 259009^2 + 234584^2 .

It is a cyclic number.

It is not a de Polignac number, because 122115315137 - 2¹⁸ = 122115052993 is a prime.

It is not a weakly prime, because it can be changed into another prime (122115315187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61057657568 + 61057657569.

It is an arithmetic number, because the mean of its divisors is an integer number (61057657569).

Almost surely, 2^122115315137 is an apocalyptic number.

It is an amenable number.

122115315137 is a deficient number, since it is larger than the sum of its proper divisors (1).

122115315137 is an equidigital number, since it uses as much as digits as its factorization.

122115315137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6300, while the sum is 32.

Adding to 122115315137 its reverse (731513511221), we get a palindrome (853628826358).

The spelling of 122115315137 in words is "one hundred twenty-two billion, one hundred fifteen million, three hundred fifteen thousand, one hundred thirty-seven".