43221332 has 36 divisors (see below), whose sum is σ = 95989824. Its totient is φ = 16838640.

The previous prime is 43221331. The next prime is 43221377. The reversal of 43221332 is 23312234.

It is a super-4 number, since 4×43221332⁴ (a number of 32 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43221331) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7868 + ... + 12179.

It is an arithmetic number, because the mean of its divisors is an integer number (2666384).

Almost surely, 2^43221332 is an apocalyptic number.

It is an amenable number.

43221332 is an abundant number, since it is smaller than the sum of its proper divisors (52768492).

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

43221332 is a wasteful number, since it uses less digits than its factorization.

43221332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20076 (or 20067 counting only the distinct ones).

The product of its digits is 864, while the sum is 20.

The square root of 43221332 is about 6574.2932700025. The cubic root of 43221332 is about 350.9398738470.

Adding to 43221332 its reverse (23312234), we get a palindrome (66533566).

The spelling of 43221332 in words is "forty-three million, two hundred twenty-one thousand, three hundred thirty-two".