12320000321 has 2 divisors, whose sum is σ = 12320000322. Its totient is φ = 12320000320.

The previous prime is 12320000293. The next prime is 12320000323. The reversal of 12320000321 is 12300002321.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12020710321 + 299290000 = 109639^2 + 17300^2 .

It is a cyclic number.

It is not a de Polignac number, because 12320000321 - 2⁶ = 12320000257 is a prime.

Together with 12320000323, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12320000296 and 12320000305.

It is not a weakly prime, because it can be changed into another prime (12320000323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6160000160 + 6160000161.

It is an arithmetic number, because the mean of its divisors is an integer number (6160000161).

Almost surely, 2^12320000321 is an apocalyptic number.

It is an amenable number.

12320000321 is a deficient number, since it is larger than the sum of its proper divisors (1).

12320000321 is an equidigital number, since it uses as much as digits as its factorization.

12320000321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 12320000321 its reverse (12300002321), we get a palindrome (24620002642).

The spelling of 12320000321 in words is "twelve billion, three hundred twenty million, three hundred twenty-one", and thus it is an aban number.