200201202202121 has 4 divisors (see below), whose sum is σ = 210738107581200. Its totient is φ = 189664296823044.

The previous prime is 200201202202097. The next prime is 200201202202213. The reversal of 200201202202121 is 121202202102002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 200201202202121 - 2¹⁰ = 200201202201097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 200201202202121.

It is not an unprimeable number, because it can be changed into a prime (200201202202321) 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, 5268452689511 + ... + 5268452689548.

It is an arithmetic number, because the mean of its divisors is an integer number (52684526895300).

Almost surely, 2^{200201202202121} is an apocalyptic number.

It is an amenable number.

200201202202121 is a deficient number, since it is larger than the sum of its proper divisors (10536905379079).

200201202202121 is a wasteful number, since it uses less digits than its factorization.

200201202202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10536905379078.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 200201202202121 its reverse (121202202102002), we get a palindrome (321403404304123).

The spelling of 200201202202121 in words is "two hundred trillion, two hundred one billion, two hundred two million, two hundred two thousand, one hundred twenty-one".