122313128989 has 2 divisors, whose sum is σ = 122313128990. Its totient is φ = 122313128988.

The previous prime is 122313128983. The next prime is 122313128999. The reversal of 122313128989 is 989821313221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70906636089 + 51406492900 = 266283^2 + 226730^2 .

It is a cyclic number.

It is not a de Polignac number, because 122313128989 - 2⁹ = 122313128477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122313128983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61156564494 + 61156564495.

It is an arithmetic number, because the mean of its divisors is an integer number (61156564495).

Almost surely, 2^122313128989 is an apocalyptic number.

It is an amenable number.

122313128989 is a deficient number, since it is larger than the sum of its proper divisors (1).

122313128989 is an equidigital number, since it uses as much as digits as its factorization.

122313128989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 373248, while the sum is 49.

The spelling of 122313128989 in words is "one hundred twenty-two billion, three hundred thirteen million, one hundred twenty-eight thousand, nine hundred eighty-nine".