222342210 has 48 divisors (see below), whose sum is σ = 581326200. Its totient is φ = 58959360.

The previous prime is 222342157. The next prime is 222342223. The reversal of 222342210 is 12243222.

It can be written as a sum of positive squares in 4 ways, for example, as 58476609 + 163865601 = 7647^2 + 12801^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9466 + ... + 23114.

Almost surely, 2^222342210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222342210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290663100).

222342210 is an abundant number, since it is smaller than the sum of its proper divisors (358983990).

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

222342210 is a wasteful number, since it uses less digits than its factorization.

222342210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13843 (or 13840 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 222342210 is about 14911.1438193051. The cubic root of 222342210 is about 605.8158607933.

Adding to 222342210 its reverse (12243222), we get a palindrome (234585432).

The spelling of 222342210 in words is "two hundred twenty-two million, three hundred forty-two thousand, two hundred ten".