122557473272 has 128 divisors (see below), whose sum is σ = 258507849600. Its totient is φ = 54083635200.

The previous prime is 122557473221. The next prime is 122557473287. The reversal of 122557473272 is 272374755221.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 251657813 + ... + 251658299.

It is an arithmetic number, because the mean of its divisors is an integer number (2019592575).

Almost surely, 2^122557473272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122557473272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129253924800).

122557473272 is an abundant number, since it is smaller than the sum of its proper divisors (135950376328).

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

122557473272 is a wasteful number, since it uses less digits than its factorization.

122557473272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177 (or 1173 counting only the distinct ones).

The product of its digits is 1646400, while the sum is 47.

The spelling of 122557473272 in words is "one hundred twenty-two billion, five hundred fifty-seven million, four hundred seventy-three thousand, two hundred seventy-two".