200201200121 has 4 divisors (see below), whose sum is σ = 215601292452. Its totient is φ = 184801107792.

The previous prime is 200201200117. The next prime is 200201200163. The reversal of 200201200121 is 121002102002.

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 51640290025 + 148560910096 = 227245^2 + 385436^2 .

It is a cyclic number.

It is not a de Polignac number, because 200201200121 - 2² = 200201200117 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (200201200021) 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, 7700046146 + ... + 7700046171.

It is an arithmetic number, because the mean of its divisors is an integer number (53900323113).

Almost surely, 2^200201200121 is an apocalyptic number.

It is an amenable number.

200201200121 is a deficient number, since it is larger than the sum of its proper divisors (15400092331).

200201200121 is a wasteful number, since it uses less digits than its factorization.

200201200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15400092330.

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

Adding to 200201200121 its reverse (121002102002), we get a palindrome (321203302123).

The spelling of 200201200121 in words is "two hundred billion, two hundred one million, two hundred thousand, one hundred twenty-one".