200021221222101 has 6 divisors (see below), whose sum is σ = 288919541765270. Its totient is φ = 133347480814728.

The previous prime is 200021221222099. The next prime is 200021221222259. The reversal of 200021221222101 is 101222122120002.

It is a happy number.

200021221222101 is a `hidden beast` number, since 20 + 0 + 0 + 212 + 212 + 221 + 0 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 120973029503076 + 79048191719025 = 10998774^2 + 8890905^2 .

It is not a de Polignac number, because 200021221222101 - 2¹ = 200021221222099 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 (200021221222301) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11112290067886 + ... + 11112290067903.

Almost surely, 2^{200021221222101} is an apocalyptic number.

It is an amenable number.

200021221222101 is a deficient number, since it is larger than the sum of its proper divisors (88898320543169).

200021221222101 is a wasteful number, since it uses less digits than its factorization.

200021221222101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22224580135795 (or 22224580135792 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 200021221222101 its reverse (101222122120002), we get a palindrome (301243343342103).

The spelling of 200021221222101 in words is "two hundred trillion, twenty-one billion, two hundred twenty-one million, two hundred twenty-two thousand, one hundred one".