321213201017 has 2 divisors, whose sum is σ = 321213201018. Its totient is φ = 321213201016.

The previous prime is 321213201013. The next prime is 321213201047. The reversal of 321213201017 is 710102312123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209375795776 + 111837405241 = 457576^2 + 334421^2 .

It is a cyclic number.

It is not a de Polignac number, because 321213201017 - 2² = 321213201013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 321213200983 and 321213201001.

It is not a weakly prime, because it can be changed into another prime (321213201013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160606600508 + 160606600509.

It is an arithmetic number, because the mean of its divisors is an integer number (160606600509).

Almost surely, 2^321213201017 is an apocalyptic number.

It is an amenable number.

321213201017 is a deficient number, since it is larger than the sum of its proper divisors (1).

321213201017 is an equidigital number, since it uses as much as digits as its factorization.

321213201017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 23.

The spelling of 321213201017 in words is "three hundred twenty-one billion, two hundred thirteen million, two hundred one thousand, seventeen".