321330021079 has 2 divisors, whose sum is σ = 321330021080. Its totient is φ = 321330021078.

The previous prime is 321330020987. The next prime is 321330021091. The reversal of 321330021079 is 970120033123.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 321330021079 - 2⁹ = 321330020567 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 321330021079.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321330021479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160665010539 + 160665010540.

It is an arithmetic number, because the mean of its divisors is an integer number (160665010540).

Almost surely, 2^321330021079 is an apocalyptic number.

321330021079 is a deficient number, since it is larger than the sum of its proper divisors (1).

321330021079 is an equidigital number, since it uses as much as digits as its factorization.

321330021079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 31.

The spelling of 321330021079 in words is "three hundred twenty-one billion, three hundred thirty million, twenty-one thousand, seventy-nine".