2221220222 has 32 divisors (see below), whose sum is σ = 3616861248. Its totient is φ = 1017006336.

The previous prime is 2221220207. The next prime is 2221220231. The reversal of 2221220222 is 2220221222.

It is a self number, because there is not a number n which added to its sum of digits gives 2221220222.

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, 2259143 + ... + 2260125.

It is an arithmetic number, because the mean of its divisors is an integer number (113026914).

Almost surely, 2^2221220222 is an apocalyptic number.

2221220222 is a deficient number, since it is larger than the sum of its proper divisors (1395641026).

2221220222 is a wasteful number, since it uses less digits than its factorization.

2221220222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1604.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 2221220222 is about 47129.8230635338. The cubic root of 2221220222 is about 1304.7597159908.

Adding to 2221220222 its reverse (2220221222), we get a palindrome (4441441444).

The spelling of 2221220222 in words is "two billion, two hundred twenty-one million, two hundred twenty thousand, two hundred twenty-two".