220255218 has 12 divisors (see below), whose sum is σ = 477219678. Its totient is φ = 73418400.

The previous prime is 220255187. The next prime is 220255219. The reversal of 220255218 is 812552022.

220255218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 207273609 + 12981609 = 14397^2 + 3603^2 .

It is a super-2 number, since 2×220255218² = 97024722112455048, which contains 22 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 220255191 and 220255200.

It is not an unprimeable number, because it can be changed into a prime (220255219) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6118183 + ... + 6118218.

Almost surely, 2^220255218 is an apocalyptic number.

220255218 is an abundant number, since it is smaller than the sum of its proper divisors (256964460).

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

220255218 is a wasteful number, since it uses less digits than its factorization.

220255218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12236409 (or 12236406 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 220255218 is about 14840.9978775014. The cubic root of 220255218 is about 603.9144232807.

The spelling of 220255218 in words is "two hundred twenty million, two hundred fifty-five thousand, two hundred eighteen".