122355988 has 24 divisors (see below), whose sum is σ = 223561800. Its totient is φ = 58520448.

The previous prime is 122355983. The next prime is 122355997. The reversal of 122355988 is 889553221.

It can be written as a sum of positive squares in 4 ways, for example, as 38962564 + 83393424 = 6242^2 + 9132^2 .

It is a super-2 number, since 2×122355988² = 29941975598912288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122355983) 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, 7806 + ... + 17482.

It is an arithmetic number, because the mean of its divisors is an integer number (9315075).

Almost surely, 2^122355988 is an apocalyptic number.

It is an amenable number.

122355988 is a deficient number, since it is larger than the sum of its proper divisors (101205812).

122355988 is a wasteful number, since it uses less digits than its factorization.

122355988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9819 (or 9817 counting only the distinct ones).

The product of its digits is 172800, while the sum is 43.

The square root of 122355988 is about 11061.4640983913. The cubic root of 122355988 is about 496.4494982180.

The spelling of 122355988 in words is "one hundred twenty-two million, three hundred fifty-five thousand, nine hundred eighty-eight".