200202100220121 has 16 divisors (see below), whose sum is σ = 267490797975360. Its totient is φ = 133190815696640.

The previous prime is 200202100220071. The next prime is 200202100220153. The reversal of 200202100220121 is 121022001202002.

It is a cyclic number.

It is not a de Polignac number, because 200202100220121 - 2²³ = 200202091831513 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 200202100220121.

It is not an unprimeable number, because it can be changed into a prime (200202100220321) 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, 245916 + ... + 20011613.

It is an arithmetic number, because the mean of its divisors is an integer number (16718174873460).

Almost surely, 2^{200202100220121} is an apocalyptic number.

It is an amenable number.

200202100220121 is a deficient number, since it is larger than the sum of its proper divisors (67288697755239).

200202100220121 is a wasteful number, since it uses less digits than its factorization.

200202100220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20264376.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 200202100220121 its reverse (121022001202002), we get a palindrome (321224101422123).

The spelling of 200202100220121 in words is "two hundred trillion, two hundred two billion, one hundred million, two hundred twenty thousand, one hundred twenty-one".