22224012 has 24 divisors (see below), whose sum is σ = 52441200. Its totient is φ = 7324416.

The previous prime is 22223989. The next prime is 22224023. The reversal of 22224012 is 21042222.

It is a super-2 number, since 2×22224012² = 987813418752288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22223982 and 22224000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9337 + ... + 11472.

It is an arithmetic number, because the mean of its divisors is an integer number (2185050).

Almost surely, 2^22224012 is an apocalyptic number.

It is an amenable number.

22224012 is an abundant number, since it is smaller than the sum of its proper divisors (30217188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22224012 is a wasteful number, since it uses less digits than its factorization.

22224012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20905 (or 20903 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 22224012 is about 4714.2350386887. The cubic root of 22224012 is about 281.1517693498.

Adding to 22224012 its reverse (21042222), we get a palindrome (43266234).

The spelling of 22224012 in words is "twenty-two million, two hundred twenty-four thousand, twelve".