200200210100221 has 4 divisors (see below), whose sum is σ = 201306288609244. Its totient is φ = 199094131591200.

The previous prime is 200200210100203. The next prime is 200200210100227. The reversal of 200200210100221 is 122001012002002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3314271224196 + 196885938876025 = 1820514^2 + 14031605^2 .

It is a cyclic number.

It is not a de Polignac number, because 200200210100221 - 2⁴⁵ = 165015838011389 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 (200200210100227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553039254240 + ... + 553039254601.

It is an arithmetic number, because the mean of its divisors is an integer number (50326572152311).

Almost surely, 2^{200200210100221} is an apocalyptic number.

It is an amenable number.

200200210100221 is a deficient number, since it is larger than the sum of its proper divisors (1106078509023).

200200210100221 is a wasteful number, since it uses less digits than its factorization.

200200210100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106078509022.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 200200210100221 its reverse (122001012002002), we get a palindrome (322201222102223).

The spelling of 200200210100221 in words is "two hundred trillion, two hundred billion, two hundred ten million, one hundred thousand, two hundred twenty-one".