321221023339 has 2 divisors, whose sum is σ = 321221023340. Its totient is φ = 321221023338.

The previous prime is 321221023301. The next prime is 321221023363. The reversal of 321221023339 is 933320122123.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 321221023339 - 2¹¹ = 321221021291 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 321221023339.

It is not a weakly prime, because it can be changed into another prime (321221023399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160610511669 + 160610511670.

It is an arithmetic number, because the mean of its divisors is an integer number (160610511670).

Almost surely, 2^321221023339 is an apocalyptic number.

321221023339 is a deficient number, since it is larger than the sum of its proper divisors (1).

321221023339 is an equidigital number, since it uses as much as digits as its factorization.

321221023339 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 31.

The spelling of 321221023339 in words is "three hundred twenty-one billion, two hundred twenty-one million, twenty-three thousand, three hundred thirty-nine".