22231222 has 16 divisors (see below), whose sum is σ = 36009792. Its totient is φ = 10232640.

The previous prime is 22231219. The next prime is 22231241. The reversal of 22231222 is 22213222.

It is a super-2 number, since 2×22231222² = 988454463226568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22231196 and 22231205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10947 + ... + 12817.

It is an arithmetic number, because the mean of its divisors is an integer number (2250612).

Almost surely, 2^22231222 is an apocalyptic number.

22231222 is a deficient number, since it is larger than the sum of its proper divisors (13778570).

22231222 is a wasteful number, since it uses less digits than its factorization.

22231222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2343.

The product of its digits is 192, while the sum is 16.

The square root of 22231222 is about 4714.9996818664. Note that the first 3 decimals coincide. The cubic root of 22231222 is about 281.1821701776.

Adding to 22231222 its reverse (22213222), we get a palindrome (44444444).

The spelling of 22231222 in words is "twenty-two million, two hundred thirty-one thousand, two hundred twenty-two".