122081580 has 120 divisors (see below), whose sum is σ = 386028720. Its totient is φ = 32296320.

The previous prime is 122081579. The next prime is 122081599. The reversal of 122081580 is 85180221.

122081580 is a `hidden beast` number, since 1 + 2 + 2 + 0 + 81 + 580 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 39 ways as a sum of consecutive naturals, for example, 289770 + ... + 290190.

It is an arithmetic number, because the mean of its divisors is an integer number (3216906).

Almost surely, 2^122081580 is an apocalyptic number.

122081580 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 122081580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193014360).

122081580 is an abundant number, since it is smaller than the sum of its proper divisors (263947140).

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

122081580 is a wasteful number, since it uses less digits than its factorization.

122081580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621 (or 610 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 122081580 is about 11049.0533531158. The cubic root of 122081580 is about 496.0780910258.

The spelling of 122081580 in words is "one hundred twenty-two million, eighty-one thousand, five hundred eighty".