22221232 has 20 divisors (see below), whose sum is σ = 46967976. Its totient is φ = 10100480.

The previous prime is 22221211. The next prime is 22221233. The reversal of 22221232 is 23212222.

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

It is not an unprimeable number, because it can be changed into a prime (22221233) 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, 62953 + ... + 63304.

Almost surely, 2^22221232 is an apocalyptic number.

22221232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22221232 is an abundant number, since it is smaller than the sum of its proper divisors (24746744).

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

22221232 is a wasteful number, since it uses less digits than its factorization.

22221232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126276 (or 126270 counting only the distinct ones).

The product of its digits is 192, while the sum is 16.

The square root of 22221232 is about 4713.9401778130. The cubic root of 22221232 is about 281.1400457764.

Adding to 22221232 its reverse (23212222), we get a palindrome (45433454).

The spelling of 22221232 in words is "twenty-two million, two hundred twenty-one thousand, two hundred thirty-two".