12321233213 has 2 divisors, whose sum is σ = 12321233214. Its totient is φ = 12321233212.

The previous prime is 12321233167. The next prime is 12321233237. The reversal of 12321233213 is 31233212321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11728456804 + 592776409 = 108298^2 + 24347^2 .

It is an emirp because it is prime and its reverse (31233212321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12321233213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12321233263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6160616606 + 6160616607.

It is an arithmetic number, because the mean of its divisors is an integer number (6160616607).

Almost surely, 2^12321233213 is an apocalyptic number.

It is an amenable number.

12321233213 is a deficient number, since it is larger than the sum of its proper divisors (1).

12321233213 is an equidigital number, since it uses as much as digits as its factorization.

12321233213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 23.

Adding to 12321233213 its reverse (31233212321), we get a palindrome (43554445534).

The spelling of 12321233213 in words is "twelve billion, three hundred twenty-one million, two hundred thirty-three thousand, two hundred thirteen".