122581172 has 12 divisors (see below), whose sum is σ = 245162400. Its totient is φ = 52534776.

The previous prime is 122581171. The next prime is 122581183. The reversal of 122581172 is 271185221.

122581172 is an admirable number.

It is a super-2 number, since 2×122581172² = 30052287457787168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122581171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2188922 + ... + 2188977.

It is an arithmetic number, because the mean of its divisors is an integer number (20430200).

Almost surely, 2^122581172 is an apocalyptic number.

It is an amenable number.

122581172 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

122581172 is a wasteful number, since it uses less digits than its factorization.

122581172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4377910 (or 4377908 counting only the distinct ones).

The product of its digits is 2240, while the sum is 29.

The square root of 122581172 is about 11071.6381805043. The cubic root of 122581172 is about 496.7538668468.

The spelling of 122581172 in words is "one hundred twenty-two million, five hundred eighty-one thousand, one hundred seventy-two".