12032021321 has 4 divisors (see below), whose sum is σ = 12123868944. Its totient is φ = 11940173700.

The previous prime is 12032021299. The next prime is 12032021359. The reversal of 12032021321 is 12312023021.

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-12032021321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12032021321.

It is not an unprimeable number, because it can be changed into a prime (12032020321) 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, 45923615 + ... + 45923876.

It is an arithmetic number, because the mean of its divisors is an integer number (3030967236).

Almost surely, 2^12032021321 is an apocalyptic number.

It is an amenable number.

12032021321 is a deficient number, since it is larger than the sum of its proper divisors (91847623).

12032021321 is an equidigital number, since it uses as much as digits as its factorization.

12032021321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91847622.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 12032021321 its reverse (12312023021), we get a palindrome (24344044342).

The spelling of 12032021321 in words is "twelve billion, thirty-two million, twenty-one thousand, three hundred twenty-one".