122718187251311 has 2 divisors, whose sum is σ = 122718187251312. Its totient is φ = 122718187251310.

The previous prime is 122718187251269. The next prime is 122718187251323. The reversal of 122718187251311 is 113152781817221.

It is a strong prime.

It is an emirp because it is prime and its reverse (113152781817221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122718187251311 - 2⁴⁶ = 52349443073647 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122718187251311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122718187251511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61359093625655 + 61359093625656.

It is an arithmetic number, because the mean of its divisors is an integer number (61359093625656).

Almost surely, 2^{122718187251311} is an apocalyptic number.

122718187251311 is a deficient number, since it is larger than the sum of its proper divisors (1).

122718187251311 is an equidigital number, since it uses as much as digits as its factorization.

122718187251311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 376320, while the sum is 50.

The spelling of 122718187251311 in words is "one hundred twenty-two trillion, seven hundred eighteen billion, one hundred eighty-seven million, two hundred fifty-one thousand, three hundred eleven".