122398651 has 2 divisors, whose sum is σ = 122398652. Its totient is φ = 122398650.

The previous prime is 122398643. The next prime is 122398667. The reversal of 122398651 is 156893221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122398651 - 2³ = 122398643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122398651.

It is not a weakly prime, because it can be changed into another prime (122398621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61199325 + 61199326.

It is an arithmetic number, because the mean of its divisors is an integer number (61199326).

Almost surely, 2^122398651 is an apocalyptic number.

122398651 is a deficient number, since it is larger than the sum of its proper divisors (1).

122398651 is an equidigital number, since it uses as much as digits as its factorization.

122398651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 37.

The square root of 122398651 is about 11063.3923820861. The cubic root of 122398651 is about 496.5071920671.

The spelling of 122398651 in words is "one hundred twenty-two million, three hundred ninety-eight thousand, six hundred fifty-one".