321321200801 has 2 divisors, whose sum is σ = 321321200802. Its totient is φ = 321321200800.

The previous prime is 321321200797. The next prime is 321321200813. The reversal of 321321200801 is 108002123123.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 278835746401 + 42485454400 = 528049^2 + 206120^2 .

It is a cyclic number.

It is not a de Polignac number, because 321321200801 - 2² = 321321200797 is a prime.

It is not a weakly prime, because it can be changed into another prime (321321205801) 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, 160660600400 + 160660600401.

It is an arithmetic number, because the mean of its divisors is an integer number (160660600401).

Almost surely, 2^321321200801 is an apocalyptic number.

It is an amenable number.

321321200801 is a deficient number, since it is larger than the sum of its proper divisors (1).

321321200801 is an equidigital number, since it uses as much as digits as its factorization.

321321200801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 321321200801 its reverse (108002123123), we get a palindrome (429323323924).

The spelling of 321321200801 in words is "three hundred twenty-one billion, three hundred twenty-one million, two hundred thousand, eight hundred one".