122320920 has 64 divisors (see below), whose sum is σ = 368778240. Its totient is φ = 32457600.

The previous prime is 122320907. The next prime is 122320937. The reversal of 122320920 is 29023221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22905 + ... + 27735.

It is an arithmetic number, because the mean of its divisors is an integer number (5762160).

Almost surely, 2^122320920 is an apocalyptic number.

122320920 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 122320920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184389120).

122320920 is an abundant number, since it is smaller than the sum of its proper divisors (246457320).

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

122320920 is a wasteful number, since it uses less digits than its factorization.

122320920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5056 (or 5052 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 122320920 is about 11059.8788420127. The cubic root of 122320920 is about 496.4020651642.

The spelling of 122320920 in words is "one hundred twenty-two million, three hundred twenty thousand, nine hundred twenty".