32240443221 has 18 divisors (see below), whose sum is σ = 54172718262. Its totient is φ = 18423110160.

The previous prime is 32240443217. The next prime is 32240443309. The reversal of 32240443221 is 12234404223.

32240443221 is a `hidden beast` number, since 3 + 224 + 0 + 4 + 432 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 25078206321 + 7162236900 = 158361^2 + 84630^2 .

It is not a de Polignac number, because 32240443221 - 2² = 32240443217 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32240447221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 36553350 + ... + 36554231.

It is an arithmetic number, because the mean of its divisors is an integer number (3009595459).

Almost surely, 2^32240443221 is an apocalyptic number.

It is an amenable number.

32240443221 is a deficient number, since it is larger than the sum of its proper divisors (21932275041).

32240443221 is a wasteful number, since it uses less digits than its factorization.

32240443221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73107601 (or 73107591 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 32240443221 its reverse (12234404223), we get a palindrome (44474847444).

The spelling of 32240443221 in words is "thirty-two billion, two hundred forty million, four hundred forty-three thousand, two hundred twenty-one".