122331999 has 4 divisors (see below), whose sum is σ = 163109336. Its totient is φ = 81554664.

The previous prime is 122331997. The next prime is 122332019. The reversal of 122331999 is 999133221.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 122331999 - 2¹ = 122331997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122331991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20388664 + ... + 20388669.

It is an arithmetic number, because the mean of its divisors is an integer number (40777334).

Almost surely, 2^122331999 is an apocalyptic number.

122331999 is a deficient number, since it is larger than the sum of its proper divisors (40777337).

122331999 is an equidigital number, since it uses as much as digits as its factorization.

122331999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40777336.

The product of its digits is 26244, while the sum is 39.

The square root of 122331999 is about 11060.3796951099. The cubic root of 122331999 is about 496.4170516234.

The spelling of 122331999 in words is "one hundred twenty-two million, three hundred thirty-one thousand, nine hundred ninety-nine".