200021002101281 has 2 divisors, whose sum is σ = 200021002101282. Its totient is φ = 200021002101280.

The previous prime is 200021002101269. The next prime is 200021002101307. The reversal of 200021002101281 is 182101200120002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 197121150720256 + 2899851381025 = 14039984^2 + 1702895^2 .

It is a cyclic number.

It is not a de Polignac number, because 200021002101281 - 2¹⁸ = 200021001839137 is a prime.

It is a super-2 number, since 2×200021002101281² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (200021002151281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100010501050640 + 100010501050641.

It is an arithmetic number, because the mean of its divisors is an integer number (100010501050641).

Almost surely, 2^{200021002101281} is an apocalyptic number.

It is an amenable number.

200021002101281 is a deficient number, since it is larger than the sum of its proper divisors (1).

200021002101281 is an equidigital number, since it uses as much as digits as its factorization.

200021002101281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 200021002101281 its reverse (182101200120002), we get a palindrome (382122202221283).

The spelling of 200021002101281 in words is "two hundred trillion, twenty-one billion, two million, one hundred one thousand, two hundred eighty-one".