122774301989 has 2 divisors, whose sum is σ = 122774301990. Its totient is φ = 122774301988.

The previous prime is 122774301959. The next prime is 122774301997. The reversal of 122774301989 is 989103477221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89500893889 + 33273408100 = 299167^2 + 182410^2 .

It is a cyclic number.

It is not a de Polignac number, because 122774301989 - 2²⁰ = 122773253413 is a prime.

It is a super-2 number, since 2×122774301989² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 122774301989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122774301919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61387150994 + 61387150995.

It is an arithmetic number, because the mean of its divisors is an integer number (61387150995).

Almost surely, 2^122774301989 is an apocalyptic number.

It is an amenable number.

122774301989 is a deficient number, since it is larger than the sum of its proper divisors (1).

122774301989 is an equidigital number, since it uses as much as digits as its factorization.

122774301989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1524096, while the sum is 53.

The spelling of 122774301989 in words is "one hundred twenty-two billion, seven hundred seventy-four million, three hundred one thousand, nine hundred eighty-nine".