22012444 has 12 divisors (see below), whose sum is σ = 38631600. Its totient is φ = 10974848.

The previous prime is 22012429. The next prime is 22012451. The reversal of 22012444 is 44421022.

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 3 ways as a sum of consecutive naturals, for example, 6229 + ... + 9100.

It is an arithmetic number, because the mean of its divisors is an integer number (3219300).

Almost surely, 2^22012444 is an apocalyptic number.

It is an amenable number.

22012444 is a deficient number, since it is larger than the sum of its proper divisors (16619156).

22012444 is a wasteful number, since it uses less digits than its factorization.

22012444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15692 (or 15690 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 22012444 is about 4691.7421071495. The cubic root of 22012444 is about 280.2567542855.

Adding to 22012444 its reverse (44421022), we get a palindrome (66433466).

The spelling of 22012444 in words is "twenty-two million, twelve thousand, four hundred forty-four".