200200200100121 has 16 divisors (see below), whose sum is σ = 217493735245248. Its totient is φ = 183180384878400.

The previous prime is 200200200100099. The next prime is 200200200100129. The reversal of 200200200100121 is 121001002002002.

It is a happy number.

It is not a de Polignac number, because 200200200100121 - 2⁴² = 195802153589017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200200200100129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65528915 + ... + 68515976.

It is an arithmetic number, because the mean of its divisors is an integer number (13593358452828).

Almost surely, 2^{200200200100121} is an apocalyptic number.

It is an amenable number.

200200200100121 is a deficient number, since it is larger than the sum of its proper divisors (17293535145127).

200200200100121 is a wasteful number, since it uses less digits than its factorization.

200200200100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134045912.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 200200200100121 its reverse (121001002002002), we get a palindrome (321201202102123).

The spelling of 200200200100121 in words is "two hundred trillion, two hundred billion, two hundred million, one hundred thousand, one hundred twenty-one".