321123322321 has 2 divisors, whose sum is σ = 321123322322. Its totient is φ = 321123322320.

The previous prime is 321123322283. The next prime is 321123322327. The reversal of 321123322321 is 123223321123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 257069280400 + 64054041921 = 507020^2 + 253089^2 .

It is a cyclic number.

It is not a de Polignac number, because 321123322321 - 2⁹ = 321123321809 is a prime.

It is not a weakly prime, because it can be changed into another prime (321123322327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160561661160 + 160561661161.

It is an arithmetic number, because the mean of its divisors is an integer number (160561661161).

Almost surely, 2^321123322321 is an apocalyptic number.

It is an amenable number.

321123322321 is a deficient number, since it is larger than the sum of its proper divisors (1).

321123322321 is an equidigital number, since it uses as much as digits as its factorization.

321123322321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 25.

Adding to 321123322321 its reverse (123223321123), we get a palindrome (444346643444).

The spelling of 321123322321 in words is "three hundred twenty-one billion, one hundred twenty-three million, three hundred twenty-two thousand, three hundred twenty-one".