122912320 has 56 divisors (see below), whose sum is σ = 294363648. Its totient is φ = 48883200.

The previous prime is 122912267. The next prime is 122912323. The reversal of 122912320 is 23219221.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 122912291 and 122912300.

It is not an unprimeable number, because it can be changed into a prime (122912323) 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, 60115 + ... + 62125.

Almost surely, 2^122912320 is an apocalyptic number.

122912320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122912320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147181824).

122912320 is an abundant number, since it is smaller than the sum of its proper divisors (171451328).

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

122912320 is a wasteful number, since it uses less digits than its factorization.

122912320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2219 (or 2209 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 122912320 is about 11086.5828820246. The cubic root of 122912320 is about 497.2007846988.

The spelling of 122912320 in words is "one hundred twenty-two million, nine hundred twelve thousand, three hundred twenty".