122220988 has 24 divisors (see below), whose sum is σ = 224838432. Its totient is φ = 58020864.

The previous prime is 122220983. The next prime is 122221019. The reversal of 122220988 is 889022221.

It is a happy number.

It is a super-2 number, since 2×122220988² = 29875939815392288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122220983) 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, 7756 + ... + 17452.

It is an arithmetic number, because the mean of its divisors is an integer number (9368268).

Almost surely, 2^122220988 is an apocalyptic number.

It is an amenable number.

122220988 is a deficient number, since it is larger than the sum of its proper divisors (102617444).

122220988 is a wasteful number, since it uses less digits than its factorization.

122220988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9861 (or 9859 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 122220988 is about 11055.3601479102. The cubic root of 122220988 is about 496.2668471757.

The spelling of 122220988 in words is "one hundred twenty-two million, two hundred twenty thousand, nine hundred eighty-eight".