12321311213 has 2 divisors, whose sum is σ = 12321311214. Its totient is φ = 12321311212.

The previous prime is 12321311183. The next prime is 12321311237. The reversal of 12321311213 is 31211312321.

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., 10846597609 + 1474713604 = 104147^2 + 38402^2 .

It is a cyclic number.

It is not a de Polignac number, because 12321311213 - 2³² = 8026343917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12321317213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6160655606 + 6160655607.

It is an arithmetic number, because the mean of its divisors is an integer number (6160655607).

Almost surely, 2^12321311213 is an apocalyptic number.

It is an amenable number.

12321311213 is a deficient number, since it is larger than the sum of its proper divisors (1).

12321311213 is an equidigital number, since it uses as much as digits as its factorization.

12321311213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 20.

Adding to 12321311213 its reverse (31211312321), we get a palindrome (43532623534).

The spelling of 12321311213 in words is "twelve billion, three hundred twenty-one million, three hundred eleven thousand, two hundred thirteen".