320133220021 has 2 divisors, whose sum is σ = 320133220022. Its totient is φ = 320133220020.

The previous prime is 320133219983. The next prime is 320133220061. The reversal of 320133220021 is 120022331023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 311062752900 + 9070467121 = 557730^2 + 95239^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320133220021 is a prime.

It is a super-2 number, since 2×320133220021² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320133220061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160066610010 + 160066610011.

It is an arithmetic number, because the mean of its divisors is an integer number (160066610011).

Almost surely, 2^320133220021 is an apocalyptic number.

It is an amenable number.

320133220021 is a deficient number, since it is larger than the sum of its proper divisors (1).

320133220021 is an equidigital number, since it uses as much as digits as its factorization.

320133220021 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 320133220021 its reverse (120022331023), we get a palindrome (440155551044).

The spelling of 320133220021 in words is "three hundred twenty billion, one hundred thirty-three million, two hundred twenty thousand, twenty-one".