22232222 has 16 divisors (see below), whose sum is σ = 34290432. Its totient is φ = 10805400.

The previous prime is 22232219. The next prime is 22232233. The reversal of 22232222 is 22223222.

It is a self number, because there is not a number n which added to its sum of digits gives 22232222.

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, 14597 + ... + 16047.

It is an arithmetic number, because the mean of its divisors is an integer number (2143152).

Almost surely, 2^22232222 is an apocalyptic number.

22232222 is a deficient number, since it is larger than the sum of its proper divisors (12058210).

22232222 is a wasteful number, since it uses less digits than its factorization.

22232222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1663.

The product of its digits is 384, while the sum is 17.

The square root of 22232222 is about 4715.1057252197. The cubic root of 22232222 is about 281.1863861395.

Adding to 22232222 its reverse (22223222), we get a palindrome (44455444).

It can be divided in two parts, 2223222 and 2, that multiplied together give a palindrome (4446444).

The spelling of 22232222 in words is "twenty-two million, two hundred thirty-two thousand, two hundred twenty-two".