22121232 has 40 divisors (see below), whose sum is σ = 65311296. Its totient is φ = 6320256.

The previous prime is 22121213. The next prime is 22121293. The reversal of 22121232 is 23212122.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a plaindrome in base 9.

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, 32583 + ... + 33254.

Almost surely, 2^22121232 is an apocalyptic number.

It is an amenable number.

22121232 is an abundant number, since it is smaller than the sum of its proper divisors (43190064).

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

22121232 is a wasteful number, since it uses less digits than its factorization.

22121232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65855 (or 65849 counting only the distinct ones).

The product of its digits is 96, while the sum is 15.

The square root of 22121232 is about 4703.3213796210. The cubic root of 22121232 is about 280.7176827076.

Adding to 22121232 its reverse (23212122), we get a palindrome (45333354).

The spelling of 22121232 in words is "twenty-two million, one hundred twenty-one thousand, two hundred thirty-two".