220055231 has 4 divisors (see below), whose sum is σ = 240060264. Its totient is φ = 200050200.

The previous prime is 220055221. The next prime is 220055233. The reversal of 220055231 is 132550022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 220055231 - 2⁶ = 220055167 is a prime.

It is a super-2 number, since 2×220055231² = 96848609380926722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220055233) 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, 10002500 + ... + 10002521.

It is an arithmetic number, because the mean of its divisors is an integer number (60015066).

Almost surely, 2^220055231 is an apocalyptic number.

220055231 is a deficient number, since it is larger than the sum of its proper divisors (20005033).

220055231 is a wasteful number, since it uses less digits than its factorization.

220055231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20005032.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 220055231 is about 14834.2586939827. The cubic root of 220055231 is about 603.7315874974.

The spelling of 220055231 in words is "two hundred twenty million, fifty-five thousand, two hundred thirty-one".