22112224 has 24 divisors (see below), whose sum is σ = 43884288. Its totient is φ = 10967040.

The previous prime is 22112221. The next prime is 22112249. The reversal of 22112224 is 42221122.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 22112198 and 22112207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22112221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1344 + ... + 6784.

It is an arithmetic number, because the mean of its divisors is an integer number (1828512).

Almost surely, 2^22112224 is an apocalyptic number.

It is an amenable number.

22112224 is a deficient number, since it is larger than the sum of its proper divisors (21772064).

22112224 is a wasteful number, since it uses less digits than its factorization.

22112224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5578 (or 5570 counting only the distinct ones).

The product of its digits is 128, while the sum is 16.

The square root of 22112224 is about 4702.3636609688. The cubic root of 22112224 is about 280.6795737963.

Adding to 22112224 its reverse (42221122), we get a palindrome (64333346).

The spelling of 22112224 in words is "twenty-two million, one hundred twelve thousand, two hundred twenty-four".