200021021022101 has 12 divisors (see below), whose sum is σ = 208164749524620. Its totient is φ = 191967314051520.

The previous prime is 200021021022023. The next prime is 200021021022113. The reversal of 200021021022101 is 101220120120002.

It can be written as a sum of positive squares in 2 ways, for example, as 151163926675876 + 48857094346225 = 12294874^2 + 6989785^2 .

It is not a de Polignac number, because 200021021022101 - 2³⁴ = 200003841152917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200021021022181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122847080 + ... + 124464641.

It is an arithmetic number, because the mean of its divisors is an integer number (17347062460385).

Almost surely, 2^{200021021022101} is an apocalyptic number.

It is an amenable number.

200021021022101 is a deficient number, since it is larger than the sum of its proper divisors (8143728502519).

200021021022101 is an equidigital number, since it uses as much as digits as its factorization.

200021021022101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247312084 (or 247311917 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 200021021022101 its reverse (101220120120002), we get a palindrome (301241141142103).

The spelling of 200021021022101 in words is "two hundred trillion, twenty-one billion, twenty-one million, twenty-two thousand, one hundred one".