12033443321 has 4 divisors (see below), whose sum is σ = 12421618944. Its totient is φ = 11645267700.

The previous prime is 12033443291. The next prime is 12033443327. The reversal of 12033443321 is 12334433021.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12033443321 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 (12033443327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194087765 + ... + 194087826.

It is an arithmetic number, because the mean of its divisors is an integer number (3105404736).

Almost surely, 2^12033443321 is an apocalyptic number.

It is an amenable number.

12033443321 is a deficient number, since it is larger than the sum of its proper divisors (388175623).

12033443321 is an equidigital number, since it uses as much as digits as its factorization.

12033443321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388175622.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 12033443321 its reverse (12334433021), we get a palindrome (24367876342).

The spelling of 12033443321 in words is "twelve billion, thirty-three million, four hundred forty-three thousand, three hundred twenty-one".