12321101321 has 2 divisors, whose sum is σ = 12321101322. Its totient is φ = 12321101320.

The previous prime is 12321101291. The next prime is 12321101341. The reversal of 12321101321 is 12310112321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8042502400 + 4278598921 = 89680^2 + 65411^2 .

It is a cyclic number.

It is not a de Polignac number, because 12321101321 - 2¹⁸ = 12320839177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12321101321.

It is not a weakly prime, because it can be changed into another prime (12321101341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6160550660 + 6160550661.

It is an arithmetic number, because the mean of its divisors is an integer number (6160550661).

Almost surely, 2^12321101321 is an apocalyptic number.

It is an amenable number.

12321101321 is a deficient number, since it is larger than the sum of its proper divisors (1).

12321101321 is an equidigital number, since it uses as much as digits as its factorization.

12321101321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 12321101321 its reverse (12310112321), we get a palindrome (24631213642).

The spelling of 12321101321 in words is "twelve billion, three hundred twenty-one million, one hundred one thousand, three hundred twenty-one".