22201224 has 16 divisors (see below), whose sum is σ = 55503120. Its totient is φ = 7400400.

The previous prime is 22201217. The next prime is 22201237. The reversal of 22201224 is 42210222.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 462502 + ... + 462549.

It is an arithmetic number, because the mean of its divisors is an integer number (3468945).

Almost surely, 2^22201224 is an apocalyptic number.

22201224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22201224 is an abundant number, since it is smaller than the sum of its proper divisors (33301896).

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

22201224 is a wasteful number, since it uses less digits than its factorization.

22201224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925060 (or 925056 counting only the distinct ones).

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

The square root of 22201224 is about 4711.8174837317. The cubic root of 22201224 is about 281.0556409281.

Adding to 22201224 its reverse (42210222), we get a palindrome (64411446).

The spelling of 22201224 in words is "twenty-two million, two hundred one thousand, two hundred twenty-four".