221222110211210 has 32 divisors (see below), whose sum is σ = 408595245886080. Its totient is φ = 86190209155008.

The previous prime is 221222110211173. The next prime is 221222110211239. The reversal of 221222110211210 is 12112011222122.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 716377697 + ... + 716686436.

It is an arithmetic number, because the mean of its divisors is an integer number (12768601433940).

Almost surely, 2^{221222110211210} is an apocalyptic number.

221222110211210 is a deficient number, since it is larger than the sum of its proper divisors (187373135674870).

221222110211210 is a wasteful number, since it uses less digits than its factorization.

221222110211210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1433064542.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 221222110211210 its reverse (12112011222122), we get a palindrome (233334121433332).

The spelling of 221222110211210 in words is "two hundred twenty-one trillion, two hundred twenty-two billion, one hundred ten million, two hundred eleven thousand, two hundred ten".