321203339950897 has 2 divisors, whose sum is σ = 321203339950898. Its totient is φ = 321203339950896.

The previous prime is 321203339950859. The next prime is 321203339950943. The reversal of 321203339950897 is 798059933302123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 213526938978721 + 107676400972176 = 14612561^2 + 10376724^2 .

It is a cyclic number.

It is not a de Polignac number, because 321203339950897 - 2¹⁹ = 321203339426609 is a prime.

It is a super-2 number, since 2×321203339950897² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (321203339950817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160601669975448 + 160601669975449.

It is an arithmetic number, because the mean of its divisors is an integer number (160601669975449).

Almost surely, 2^{321203339950897} is an apocalyptic number.

It is an amenable number.

321203339950897 is a deficient number, since it is larger than the sum of its proper divisors (1).

321203339950897 is an equidigital number, since it uses as much as digits as its factorization.

321203339950897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 66134880, while the sum is 64.

The spelling of 321203339950897 in words is "three hundred twenty-one trillion, two hundred three billion, three hundred thirty-nine million, nine hundred fifty thousand, eight hundred ninety-seven".