12000031323321 has 4 divisors (see below), whose sum is σ = 16000041764432. Its totient is φ = 8000020882212.

The previous prime is 12000031323311. The next prime is 12000031323323. The reversal of 12000031323321 is 12332313000021.

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 not a de Polignac number, because 12000031323321 - 2⁷ = 12000031323193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12000031323323) 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, 2000005220551 + ... + 2000005220556.

It is an arithmetic number, because the mean of its divisors is an integer number (4000010441108).

Almost surely, 2^{12000031323321} is an apocalyptic number.

It is an amenable number.

12000031323321 is a deficient number, since it is larger than the sum of its proper divisors (4000010441111).

12000031323321 is an equidigital number, since it uses as much as digits as its factorization.

12000031323321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4000010441110.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 12000031323321 its reverse (12332313000021), we get a palindrome (24332344323342).

The spelling of 12000031323321 in words is "twelve trillion, thirty-one million, three hundred twenty-three thousand, three hundred twenty-one".