22121332 has 24 divisors (see below), whose sum is σ = 39501000. Its totient is φ = 10838016.

The previous prime is 22121329. The next prime is 22121347. The reversal of 22121332 is 23312122.

It can be written as a sum of positive squares in 4 ways, for example, as 1089936 + 21031396 = 1044^2 + 4586^2 .

It is a plaindrome in base 9.

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, 49044 + ... + 49492.

It is an arithmetic number, because the mean of its divisors is an integer number (1645875).

Almost surely, 2^22121332 is an apocalyptic number.

It is an amenable number.

22121332 is a deficient number, since it is larger than the sum of its proper divisors (17379668).

22121332 is a wasteful number, since it uses less digits than its factorization.

22121332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675 (or 673 counting only the distinct ones).

The product of its digits is 144, while the sum is 16.

The square root of 22121332 is about 4703.3320103943. The cubic root of 22121332 is about 280.7181057058.

Adding to 22121332 its reverse (23312122), we get a palindrome (45433454).

The spelling of 22121332 in words is "twenty-two million, one hundred twenty-one thousand, three hundred thirty-two".