122309988 has 24 divisors (see below), whose sum is σ = 288060192. Its totient is φ = 40388544.

The previous prime is 122309987. The next prime is 122309989. The reversal of 122309988 is 889903221.

It is an interprime number because it is at equal distance from previous prime (122309987) and next prime (122309989).

It is not an unprimeable number, because it can be changed into a prime (122309981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46345 + ... + 48912.

It is an arithmetic number, because the mean of its divisors is an integer number (12002508).

Almost surely, 2^122309988 is an apocalyptic number.

It is an amenable number.

122309988 is an abundant number, since it is smaller than the sum of its proper divisors (165750204).

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

122309988 is a wasteful number, since it uses less digits than its factorization.

122309988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95371 (or 95369 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 122309988 is about 11059.3846121744. The cubic root of 122309988 is about 496.3872766634.

The spelling of 122309988 in words is "one hundred twenty-two million, three hundred nine thousand, nine hundred eighty-eight".