22212044 has 6 divisors (see below), whose sum is σ = 38871084. Its totient is φ = 11106020.

The previous prime is 22212019. The next prime is 22212049. The reversal of 22212044 is 44021222.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22212049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2776502 + ... + 2776509.

It is an arithmetic number, because the mean of its divisors is an integer number (6478514).

Almost surely, 2^22212044 is an apocalyptic number.

It is an amenable number.

22212044 is a deficient number, since it is larger than the sum of its proper divisors (16659040).

22212044 is a wasteful number, since it uses less digits than its factorization.

22212044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5553015 (or 5553013 counting only the distinct ones).

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

The square root of 22212044 is about 4712.9655207735. The cubic root of 22212044 is about 281.1012919869.

Adding to 22212044 its reverse (44021222), we get a palindrome (66233266).

The spelling of 22212044 in words is "twenty-two million, two hundred twelve thousand, forty-four".