222131130 has 64 divisors (see below), whose sum is σ = 582761088. Its totient is φ = 53856000.

The previous prime is 222131113. The next prime is 222131131. The reversal of 222131130 is 31131222.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (222131131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21880 + ... + 30380.

It is an arithmetic number, because the mean of its divisors is an integer number (9105642).

Almost surely, 2^222131130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222131130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291380544).

222131130 is an abundant number, since it is smaller than the sum of its proper divisors (360629958).

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

222131130 is a wasteful number, since it uses less digits than its factorization.

222131130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8591.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 222131130 is about 14904.0642108118. The cubic root of 222131130 is about 605.6240901898.

Adding to 222131130 its reverse (31131222), we get a palindrome (253262352).

The spelling of 222131130 in words is "two hundred twenty-two million, one hundred thirty-one thousand, one hundred thirty".