22131244 has 18 divisors (see below), whose sum is σ = 40490660. Its totient is φ = 10583496.

The previous prime is 22131223. The next prime is 22131259. The reversal of 22131244 is 44213122.

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 5 ways as a sum of consecutive naturals, for example, 3114 + ... + 7345.

Almost surely, 2^22131244 is an apocalyptic number.

It is an amenable number.

22131244 is a deficient number, since it is larger than the sum of its proper divisors (18359416).

22131244 is a wasteful number, since it uses less digits than its factorization.

22131244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10509 (or 10484 counting only the distinct ones).

The product of its digits is 384, while the sum is 19.

The square root of 22131244 is about 4704.3856134462. The cubic root of 22131244 is about 280.7600269666.

Adding to 22131244 its reverse (44213122), we get a palindrome (66344366).

The spelling of 22131244 in words is "twenty-two million, one hundred thirty-one thousand, two hundred forty-four".