322320320821 has 2 divisors, whose sum is σ = 322320320822. Its totient is φ = 322320320820.

The previous prime is 322320320801. The next prime is 322320320837. The reversal of 322320320821 is 128023023223.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 321671599921 + 648720900 = 567161^2 + 25470^2 .

It is a cyclic number.

It is not a de Polignac number, because 322320320821 - 2⁵ = 322320320789 is a prime.

It is a super-2 number, since 2×322320320821² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 322320320821.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (322320320801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161160160410 + 161160160411.

It is an arithmetic number, because the mean of its divisors is an integer number (161160160411).

Almost surely, 2^322320320821 is an apocalyptic number.

It is an amenable number.

322320320821 is a deficient number, since it is larger than the sum of its proper divisors (1).

322320320821 is an equidigital number, since it uses as much as digits as its factorization.

322320320821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 28.

The spelling of 322320320821 in words is "three hundred twenty-two billion, three hundred twenty million, three hundred twenty thousand, eight hundred twenty-one".