221332222 has 16 divisors (see below), whose sum is σ = 337493520. Its totient is φ = 108839808.

The previous prime is 221332213. The next prime is 221332249. The reversal of 221332222 is 222233122.

It is a self number, because there is not a number n which added to its sum of digits gives 221332222.

It is a congruent number.

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, 134388 + ... + 136024.

It is an arithmetic number, because the mean of its divisors is an integer number (21093345).

Almost surely, 2^221332222 is an apocalyptic number.

221332222 is a deficient number, since it is larger than the sum of its proper divisors (116161298).

221332222 is a wasteful number, since it uses less digits than its factorization.

221332222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2715.

The product of its digits is 576, while the sum is 19.

The square root of 221332222 is about 14877.2383862060. The cubic root of 221332222 is about 604.8971634969.

Adding to 221332222 its reverse (222233122), we get a palindrome (443565344).

The spelling of 221332222 in words is "two hundred twenty-one million, three hundred thirty-two thousand, two hundred twenty-two".