220231131102 has 12 divisors (see below), whose sum is σ = 477167450760. Its totient is φ = 73410377028.

The previous prime is 220231131091. The next prime is 220231131143. The reversal of 220231131102 is 201131132022.

220231131102 is a `hidden beast` number, since 220 + 2 + 311 + 31 + 102 = 666.

It is a super-2 number, since 2×220231131102² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 12235062839 = 220231131102 / (2 + 2 + 0 + 2 + 3 + 1 + 1 + 3 + 1 + 1 + 0 + 2).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6117531402 + ... + 6117531437.

It is an arithmetic number, because the mean of its divisors is an integer number (39763954230).

Almost surely, 2^220231131102 is an apocalyptic number.

220231131102 is an abundant number, since it is smaller than the sum of its proper divisors (256936319658).

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

220231131102 is a wasteful number, since it uses less digits than its factorization.

220231131102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12235062847 (or 12235062844 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 220231131102 its reverse (201131132022), we get a palindrome (421362263124).

The spelling of 220231131102 in words is "two hundred twenty billion, two hundred thirty-one million, one hundred thirty-one thousand, one hundred two".