122191180 has 48 divisors (see below), whose sum is σ = 270325440. Its totient is φ = 46303488.

The previous prime is 122191177. The next prime is 122191207. The reversal of 122191180 is 81191221.

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, 48922 + ... + 51358.

It is an arithmetic number, because the mean of its divisors is an integer number (5631780).

Almost surely, 2^122191180 is an apocalyptic number.

122191180 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 122191180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135162720).

122191180 is an abundant number, since it is smaller than the sum of its proper divisors (148134260).

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

122191180 is a wasteful number, since it uses less digits than its factorization.

122191180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2578 (or 2576 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 25.

The square root of 122191180 is about 11054.0119413722. The cubic root of 122191180 is about 496.2264997003.

The spelling of 122191180 in words is "one hundred twenty-two million, one hundred ninety-one thousand, one hundred eighty".