32221331321 has 4 divisors (see below), whose sum is σ = 32453139600. Its totient is φ = 31989523044.

The previous prime is 32221331309. The next prime is 32221331333. The reversal of 32221331321 is 12313312223.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (32221331309) and next prime (32221331333).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32221331321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (32221331381) 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 3 ways as a sum of consecutive naturals, for example, 115903931 + ... + 115904208.

It is an arithmetic number, because the mean of its divisors is an integer number (8113284900).

Almost surely, 2^32221331321 is an apocalyptic number.

It is an amenable number.

32221331321 is a deficient number, since it is larger than the sum of its proper divisors (231808279).

32221331321 is a wasteful number, since it uses less digits than its factorization.

32221331321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231808278.

The product of its digits is 1296, while the sum is 23.

Adding to 32221331321 its reverse (12313312223), we get a palindrome (44534643544).

The spelling of 32221331321 in words is "thirty-two billion, two hundred twenty-one million, three hundred thirty-one thousand, three hundred twenty-one".