2021330003281 has 2 divisors, whose sum is σ = 2021330003282. Its totient is φ = 2021330003280.

The previous prime is 2021330003263. The next prime is 2021330003323. The reversal of 2021330003281 is 1823000331202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1245857792400 + 775472210881 = 1116180^2 + 880609^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021330003281 - 2⁷ = 2021330003153 is a prime.

It is a super-2 number, since 2×2021330003281² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2021330003221) 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, 1010665001640 + 1010665001641.

It is an arithmetic number, because the mean of its divisors is an integer number (1010665001641).

Almost surely, 2^{2021330003281} is an apocalyptic number.

It is an amenable number.

2021330003281 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021330003281 is an equidigital number, since it uses as much as digits as its factorization.

2021330003281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 2021330003281 its reverse (1823000331202), we get a palindrome (3844330334483).

The spelling of 2021330003281 in words is "two trillion, twenty-one billion, three hundred thirty million, three thousand, two hundred eighty-one".