12200312321 has 2 divisors, whose sum is σ = 12200312322. Its totient is φ = 12200312320.

The previous prime is 12200312297. The next prime is 12200312323. The reversal of 12200312321 is 12321300221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7461504400 + 4738807921 = 86380^2 + 68839^2 .

It is a cyclic number.

It is not a de Polignac number, because 12200312321 - 2¹⁴ = 12200295937 is a prime.

Together with 12200312323, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12200312321.

It is not a weakly prime, because it can be changed into another prime (12200312323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6100156160 + 6100156161.

It is an arithmetic number, because the mean of its divisors is an integer number (6100156161).

Almost surely, 2^12200312321 is an apocalyptic number.

It is an amenable number.

12200312321 is a deficient number, since it is larger than the sum of its proper divisors (1).

12200312321 is an equidigital number, since it uses as much as digits as its factorization.

12200312321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 12200312321 its reverse (12321300221), we get a palindrome (24521612542).

The spelling of 12200312321 in words is "twelve billion, two hundred million, three hundred twelve thousand, three hundred twenty-one".