222211210 has 16 divisors (see below), whose sum is σ = 430748136. Its totient is φ = 82047168.

The previous prime is 222211201. The next prime is 222211247. The reversal of 222211210 is 12112222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 63728289 + 158482921 = 7983^2 + 12589^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

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, 854529 + ... + 854788.

Almost surely, 2^222211210 is an apocalyptic number.

222211210 is a deficient number, since it is larger than the sum of its proper divisors (208536926).

222211210 is a wasteful number, since it uses less digits than its factorization.

222211210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1709337.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 222211210 is about 14906.7504842605. The cubic root of 222211210 is about 605.6968588442.

Adding to 222211210 its reverse (12112222), we get a palindrome (234323432).

The spelling of 222211210 in words is "two hundred twenty-two million, two hundred eleven thousand, two hundred ten".