12321310993 has 2 divisors, whose sum is σ = 12321310994. Its totient is φ = 12321310992.

The previous prime is 12321310951. The next prime is 12321311003. The reversal of 12321310993 is 39901312321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12297035664 + 24275329 = 110892^2 + 4927^2 .

It is a cyclic number.

It is not a de Polignac number, because 12321310993 - 2⁹ = 12321310481 is a prime.

It is not a weakly prime, because it can be changed into another prime (12321310943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6160655496 + 6160655497.

It is an arithmetic number, because the mean of its divisors is an integer number (6160655497).

Almost surely, 2^12321310993 is an apocalyptic number.

It is an amenable number.

12321310993 is a deficient number, since it is larger than the sum of its proper divisors (1).

12321310993 is an equidigital number, since it uses as much as digits as its factorization.

12321310993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 34.

The spelling of 12321310993 in words is "twelve billion, three hundred twenty-one million, three hundred ten thousand, nine hundred ninety-three".