222220210 has 16 divisors (see below), whose sum is σ = 404121816. Its totient is φ = 87971328.

The previous prime is 222220189. The next prime is 222220211. The reversal of 222220210 is 12022222.

It can be written as a sum of positive squares in 4 ways, for example, as 168974001 + 53246209 = 12999^2 + 7297^2 .

It is not an unprimeable number, because it can be changed into a prime (222220211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113577 + ... + 115516.

Almost surely, 2^222220210 is an apocalyptic number.

222220210 is a deficient number, since it is larger than the sum of its proper divisors (181901606).

222220210 is a wasteful number, since it uses less digits than its factorization.

222220210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229197.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 222220210 is about 14907.0523578607. The cubic root of 222220210 is about 605.7050360466.

Adding to 222220210 its reverse (12022222), we get a palindrome (234242432).

The spelling of 222220210 in words is "two hundred twenty-two million, two hundred twenty thousand, two hundred ten".