220856232272 has 20 divisors (see below), whose sum is σ = 460825023540. Its totient is φ = 101933645568.

The previous prime is 220856232271. The next prime is 220856232281. The reversal of 220856232272 is 272232658022.

It can be written as a sum of positive squares in 2 ways, for example, as 129122360896 + 91733871376 = 359336^2 + 302876^2 .

It is a super-2 number, since 2×220856232272² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220856232271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 530904197 + ... + 530904612.

It is an arithmetic number, because the mean of its divisors is an integer number (23041251177).

Almost surely, 2^220856232272 is an apocalyptic number.

It is an amenable number.

220856232272 is an abundant number, since it is smaller than the sum of its proper divisors (239968791268).

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

220856232272 is a wasteful number, since it uses less digits than its factorization.

220856232272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061808830 (or 1061808824 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 41.

The spelling of 220856232272 in words is "two hundred twenty billion, eight hundred fifty-six million, two hundred thirty-two thousand, two hundred seventy-two".