220112660 has 12 divisors (see below), whose sum is σ = 462236628. Its totient is φ = 88045056.

The previous prime is 220112647. The next prime is 220112677. The reversal of 220112660 is 66211022.

It is a happy number.

220112660 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 155052304 + 65060356 = 12452^2 + 8066^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 11005633 = 220112660 / (2 + 2 + 0 + 1 + 1 + 2 + 6 + 6 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5502797 + ... + 5502836.

It is an arithmetic number, because the mean of its divisors is an integer number (38519719).

Almost surely, 2^220112660 is an apocalyptic number.

220112660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220112660 is an abundant number, since it is smaller than the sum of its proper divisors (242123968).

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

220112660 is a wasteful number, since it uses less digits than its factorization.

220112660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11005642 (or 11005640 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 220112660 is about 14836.1942559404. The cubic root of 220112660 is about 603.7841026250.

Adding to 220112660 its reverse (66211022), we get a palindrome (286323682).

The spelling of 220112660 in words is "two hundred twenty million, one hundred twelve thousand, six hundred sixty".