122220879 has 32 divisors (see below), whose sum is σ = 188528640. Its totient is φ = 69724800.

The previous prime is 122220811. The next prime is 122220899. The reversal of 122220879 is 978022221.

It is not a de Polignac number, because 122220879 - 2⁷ = 122220751 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122220899) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36237 + ... + 39465.

It is an arithmetic number, because the mean of its divisors is an integer number (5891520).

Almost surely, 2^122220879 is an apocalyptic number.

122220879 is a deficient number, since it is larger than the sum of its proper divisors (66307761).

122220879 is a wasteful number, since it uses less digits than its factorization.

122220879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3311.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 122220879 is about 11055.3552181737. The cubic root of 122220879 is about 496.2666996476.

The spelling of 122220879 in words is "one hundred twenty-two million, two hundred twenty thousand, eight hundred seventy-nine".