321440233020901 has 2 divisors, whose sum is σ = 321440233020902. Its totient is φ = 321440233020900.

The previous prime is 321440233020883. The next prime is 321440233021057. The reversal of 321440233020901 is 109020332044123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 265205621968225 + 56234611052676 = 16285135^2 + 7498974^2 .

It is a cyclic number.

It is not a de Polignac number, because 321440233020901 - 2³¹ = 321438085537253 is a prime.

It is a super-2 number, since 2×321440233020901² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321440233020001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160720116510450 + 160720116510451.

It is an arithmetic number, because the mean of its divisors is an integer number (160720116510451).

Almost surely, 2^{321440233020901} is an apocalyptic number.

It is an amenable number.

321440233020901 is a deficient number, since it is larger than the sum of its proper divisors (1).

321440233020901 is an equidigital number, since it uses as much as digits as its factorization.

321440233020901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 34.

The spelling of 321440233020901 in words is "three hundred twenty-one trillion, four hundred forty billion, two hundred thirty-three million, twenty thousand, nine hundred one".