222221212210210 has 16 divisors (see below), whose sum is σ = 407545317488376. Its totient is φ = 87211343659648.

The previous prime is 222221212210187. The next prime is 222221212210229. The reversal of 222221212210210 is 12012212122222.

It can be written as a sum of positive squares in 4 ways, for example, as 195357339666841 + 26863872543369 = 13977029^2 + 5183037^2 .

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, 209642652499 + ... + 209642653558.

Almost surely, 2^{222221212210210} is an apocalyptic number.

222221212210210 is a deficient number, since it is larger than the sum of its proper divisors (185324105278166).

222221212210210 is a wasteful number, since it uses less digits than its factorization.

222221212210210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419285306117.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 222221212210210 its reverse (12012212122222), we get a palindrome (234233424332432).

The spelling of 222221212210210 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, two hundred twelve million, two hundred ten thousand, two hundred ten".