22221021232 has 40 divisors (see below), whose sum is σ = 45596224512. Its totient is φ = 10454553600.

The previous prime is 22221021191. The next prime is 22221021233. The reversal of 22221021232 is 23212012222.

It is not an unprimeable number, because it can be changed into a prime (22221021233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1873882 + ... + 1885702.

Almost surely, 2^22221021232 is an apocalyptic number.

It is an amenable number.

22221021232 is an abundant number, since it is smaller than the sum of its proper divisors (23375203280).

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

22221021232 is a wasteful number, since it uses less digits than its factorization.

22221021232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18757 (or 18751 counting only the distinct ones).

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

Adding to 22221021232 its reverse (23212012222), we get a palindrome (45433033454).

The spelling of 22221021232 in words is "twenty-two billion, two hundred twenty-one million, twenty-one thousand, two hundred thirty-two".