22412222 has 16 divisors (see below), whose sum is σ = 40681440. Its totient is φ = 9040128.

The previous prime is 22412219. The next prime is 22412233. The reversal of 22412222 is 22221422.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 22412222.

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, 46847 + ... + 47322.

It is an arithmetic number, because the mean of its divisors is an integer number (2542590).

Almost surely, 2^22412222 is an apocalyptic number.

22412222 is a deficient number, since it is larger than the sum of its proper divisors (18269218).

22412222 is a wasteful number, since it uses less digits than its factorization.

22412222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94195.

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

The square root of 22412222 is about 4734.1548348148. The cubic root of 22412222 is about 281.9432090591.

Adding to 22412222 its reverse (22221422), we get a palindrome (44633644).

The spelling of 22412222 in words is "twenty-two million, four hundred twelve thousand, two hundred twenty-two".