122816220 has 24 divisors (see below), whose sum is σ = 343885584. Its totient is φ = 32750976.

The previous prime is 122816219. The next prime is 122816231. The reversal of 122816220 is 22618221.

It is a congruent number.

It is an unprimeable number.

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, 1023409 + ... + 1023528.

It is an arithmetic number, because the mean of its divisors is an integer number (14328566).

Almost surely, 2^122816220 is an apocalyptic number.

122816220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122816220 is an abundant number, since it is smaller than the sum of its proper divisors (221069364).

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

122816220 is a wasteful number, since it uses less digits than its factorization.

122816220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2046949 (or 2046947 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 122816220 is about 11082.2479669064. The cubic root of 122816220 is about 497.0711707499.

The spelling of 122816220 in words is "one hundred twenty-two million, eight hundred sixteen thousand, two hundred twenty".