321303220213 has 2 divisors, whose sum is σ = 321303220214. Its totient is φ = 321303220212.

The previous prime is 321303220211. The next prime is 321303220241. The reversal of 321303220213 is 312022303123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 318030579364 + 3272640849 = 563942^2 + 57207^2 .

It is a cyclic number.

It is not a de Polignac number, because 321303220213 - 2¹ = 321303220211 is a prime.

Together with 321303220211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321303220211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160651610106 + 160651610107.

It is an arithmetic number, because the mean of its divisors is an integer number (160651610107).

Almost surely, 2^321303220213 is an apocalyptic number.

It is an amenable number.

321303220213 is a deficient number, since it is larger than the sum of its proper divisors (1).

321303220213 is an equidigital number, since it uses as much as digits as its factorization.

321303220213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 321303220213 its reverse (312022303123), we get a palindrome (633325523336).

The spelling of 321303220213 in words is "three hundred twenty-one billion, three hundred three million, two hundred twenty thousand, two hundred thirteen".