1323210002321 has 2 divisors, whose sum is σ = 1323210002322. Its totient is φ = 1323210002320.

The previous prime is 1323210002297. The next prime is 1323210002339. The reversal of 1323210002321 is 1232000123231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1039504632721 + 283705369600 = 1019561^2 + 532640^2 .

It is a cyclic number.

It is not a de Polignac number, because 1323210002321 - 2¹⁰ = 1323210001297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1323210002293 and 1323210002302.

It is not a weakly prime, because it can be changed into another prime (1323210004321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661605001160 + 661605001161.

It is an arithmetic number, because the mean of its divisors is an integer number (661605001161).

Almost surely, 2^{1323210002321} is an apocalyptic number.

It is an amenable number.

1323210002321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323210002321 is an equidigital number, since it uses as much as digits as its factorization.

1323210002321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1323210002321 its reverse (1232000123231), we get a palindrome (2555210125552).

The spelling of 1323210002321 in words is "one trillion, three hundred twenty-three billion, two hundred ten million, two thousand, three hundred twenty-one".