122615223251 has 2 divisors, whose sum is σ = 122615223252. Its totient is φ = 122615223250.

The previous prime is 122615223233. The next prime is 122615223317. The reversal of 122615223251 is 152322516221.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122615223251 is a prime.

It is not a weakly prime, because it can be changed into another prime (122615223551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61307611625 + 61307611626.

It is an arithmetic number, because the mean of its divisors is an integer number (61307611626).

Almost surely, 2^122615223251 is an apocalyptic number.

122615223251 is a deficient number, since it is larger than the sum of its proper divisors (1).

122615223251 is an equidigital number, since it uses as much as digits as its factorization.

122615223251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14400, while the sum is 32.

Adding to 122615223251 its reverse (152322516221), we get a palindrome (274937739472).

The spelling of 122615223251 in words is "one hundred twenty-two billion, six hundred fifteen million, two hundred twenty-three thousand, two hundred fifty-one".