122399265906 has 48 divisors (see below), whose sum is σ = 280827240408. Its totient is φ = 38395814400.

The previous prime is 122399265893. The next prime is 122399265941. The reversal of 122399265906 is 609562993221.

It is a happy number.

122399265906 is a `hidden beast` number, since 1 + 2 + 23 + 9 + 9 + 26 + 590 + 6 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 121737490281 + 661775625 = 348909^2 + 25725^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4779496 + ... + 4805036.

Almost surely, 2^122399265906 is an apocalyptic number.

122399265906 is an abundant number, since it is smaller than the sum of its proper divisors (158427974502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122399265906 is a wasteful number, since it uses less digits than its factorization.

122399265906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41227 (or 41224 counting only the distinct ones).

The product of its (nonzero) digits is 3149280, while the sum is 54.

The spelling of 122399265906 in words is "one hundred twenty-two billion, three hundred ninety-nine million, two hundred sixty-five thousand, nine hundred six".