320021323201 has 2 divisors, whose sum is σ = 320021323202. Its totient is φ = 320021323200.

The previous prime is 320021323151. The next prime is 320021323217. The reversal of 320021323201 is 102323120023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 164958634801 + 155062688400 = 406151^2 + 393780^2 .

It is a cyclic number.

It is not a de Polignac number, because 320021323201 - 2¹¹ = 320021321153 is a prime.

It is not a weakly prime, because it can be changed into another prime (320021323231) 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, 160010661600 + 160010661601.

It is an arithmetic number, because the mean of its divisors is an integer number (160010661601).

Almost surely, 2^320021323201 is an apocalyptic number.

It is an amenable number.

320021323201 is a deficient number, since it is larger than the sum of its proper divisors (1).

320021323201 is an equidigital number, since it uses as much as digits as its factorization.

320021323201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 320021323201 its reverse (102323120023), we get a palindrome (422344443224).

The spelling of 320021323201 in words is "three hundred twenty billion, twenty-one million, three hundred twenty-three thousand, two hundred one".