122118977 has 2 divisors, whose sum is σ = 122118978. Its totient is φ = 122118976.

The previous prime is 122118961. The next prime is 122118989. The reversal of 122118977 is 779811221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121903681 + 215296 = 11041^2 + 464^2 .

It is a cyclic number.

It is not a de Polignac number, because 122118977 - 2⁴ = 122118961 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122118977.

It is not a weakly prime, because it can be changed into another prime (122118077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61059488 + 61059489.

It is an arithmetic number, because the mean of its divisors is an integer number (61059489).

Almost surely, 2^122118977 is an apocalyptic number.

It is an amenable number.

122118977 is a deficient number, since it is larger than the sum of its proper divisors (1).

122118977 is an equidigital number, since it uses as much as digits as its factorization.

122118977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14112, while the sum is 38.

The square root of 122118977 is about 11050.7455404602. The cubic root of 122118977 is about 496.1287400491.

The spelling of 122118977 in words is "one hundred twenty-two million, one hundred eighteen thousand, nine hundred seventy-seven".