22221332 has 24 divisors (see below), whose sum is σ = 44864064. Its totient is φ = 9433152.

The previous prime is 22221319. The next prime is 22221343. The reversal of 22221332 is 23312222.

It is a self number, because there is not a number n which added to its sum of digits gives 22221332.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 713 + ... + 6704.

It is an arithmetic number, because the mean of its divisors is an integer number (1869336).

Almost surely, 2^22221332 is an apocalyptic number.

It is an amenable number.

22221332 is an abundant number, since it is smaller than the sum of its proper divisors (22642732).

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

22221332 is a wasteful number, since it uses less digits than its factorization.

22221332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7535 (or 7533 counting only the distinct ones).

The product of its digits is 288, while the sum is 17.

The square root of 22221332 is about 4713.9507846391. The cubic root of 22221332 is about 281.1404675046.

Adding to 22221332 its reverse (23312222), we get a palindrome (45533554).

The spelling of 22221332 in words is "twenty-two million, two hundred twenty-one thousand, three hundred thirty-two".