122899233906 has 16 divisors (see below), whose sum is σ = 273109408800. Its totient is φ = 40966411284.

The previous prime is 122899233887. The next prime is 122899233907. The reversal of 122899233906 is 609332998221.

122899233906 is a `hidden beast` number, since 1 + 228 + 9 + 9 + 23 + 390 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 2275911739 = 122899233906 / (1 + 2 + 2 + 8 + 9 + 9 + 2 + 3 + 3 + 9 + 0 + 6).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (122899233907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1137955816 + ... + 1137955923.

It is an arithmetic number, because the mean of its divisors is an integer number (17069338050).

Almost surely, 2^122899233906 is an apocalyptic number.

122899233906 is an abundant number, since it is smaller than the sum of its proper divisors (150210174894).

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

122899233906 is a wasteful number, since it uses less digits than its factorization.

122899233906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2275911750 (or 2275911744 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 54.

The spelling of 122899233906 in words is "one hundred twenty-two billion, eight hundred ninety-nine million, two hundred thirty-three thousand, nine hundred six".