200200010122121 has 4 divisors (see below), whose sum is σ = 200205186363972. Its totient is φ = 200194833880272.

The previous prime is 200200010122093. The next prime is 200200010122207. The reversal of 200200010122121 is 121221010002002.

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 83025555290896 + 117174454831225 = 9111836^2 + 10824715^2 .

It is a cyclic number.

It is not a de Polignac number, because 200200010122121 - 2¹⁴ = 200200010105737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200200010122096 and 200200010122105.

It is not an unprimeable number, because it can be changed into a prime (200200010125121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2588062910 + ... + 2588140263.

It is an arithmetic number, because the mean of its divisors is an integer number (50051296590993).

Almost surely, 2^{200200010122121} is an apocalyptic number.

It is an amenable number.

200200010122121 is a deficient number, since it is larger than the sum of its proper divisors (5176241851).

200200010122121 is an equidigital number, since it uses as much as digits as its factorization.

200200010122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5176241850.

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

Adding to 200200010122121 its reverse (121221010002002), we get a palindrome (321421020124123).

The spelling of 200200010122121 in words is "two hundred trillion, two hundred billion, ten million, one hundred twenty-two thousand, one hundred twenty-one".