222242530 has 16 divisors (see below), whose sum is σ = 423568440. Its totient is φ = 83667712.

The previous prime is 222242467. The next prime is 222242593. The reversal of 222242530 is 35242222.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (222242467) and next prime (222242593).

It can be written as a sum of positive squares in 4 ways, for example, as 204861969 + 17380561 = 14313^2 + 4169^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 653485 + ... + 653824.

Almost surely, 2^222242530 is an apocalyptic number.

222242530 is a deficient number, since it is larger than the sum of its proper divisors (201325910).

222242530 is a wasteful number, since it uses less digits than its factorization.

222242530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307333.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 222242530 is about 14907.8009780115. The cubic root of 222242530 is about 605.7253145560.

Adding to 222242530 its reverse (35242222), we get a palindrome (257484752).

The spelling of 222242530 in words is "two hundred twenty-two million, two hundred forty-two thousand, five hundred thirty".