2221220112222 has 32 divisors (see below), whose sum is σ = 4588879123872. Its totient is φ = 716231562624.

The previous prime is 2221220112191. The next prime is 2221220112233. The reversal of 2221220112222 is 2222110221222.

It is a congruent number.

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, 28879213 + ... + 28956024.

It is an arithmetic number, because the mean of its divisors is an integer number (143402472621).

Almost surely, 2^{2221220112222} is an apocalyptic number.

2221220112222 is an abundant number, since it is smaller than the sum of its proper divisors (2367659011650).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2221220112222 is a wasteful number, since it uses less digits than its factorization.

2221220112222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57835452.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 2221220112222 its reverse (2222110221222), we get a palindrome (4443330333444).

The spelling of 2221220112222 in words is "two trillion, two hundred twenty-one billion, two hundred twenty million, one hundred twelve thousand, two hundred twenty-two".