200121022002221 has 32 divisors (see below), whose sum is σ = 203397282816000. Its totient is φ = 196865186918400.

The previous prime is 200121022002079. The next prime is 200121022002227. The reversal of 200121022002221 is 122200220121002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 200121022002221 - 2¹⁴ = 200121021985837 is a prime.

It is a Duffinian number.

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 200121022002221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200121022002227) 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 31 ways as a sum of consecutive naturals, for example, 60624361271 + ... + 60624364571.

It is an arithmetic number, because the mean of its divisors is an integer number (6356165088000).

Almost surely, 2^{200121022002221} is an apocalyptic number.

It is an amenable number.

200121022002221 is a deficient number, since it is larger than the sum of its proper divisors (3276260813779).

200121022002221 is a wasteful number, since it uses less digits than its factorization.

200121022002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6189.

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

Adding to 200121022002221 its reverse (122200220121002), we get a palindrome (322321242123223).

The spelling of 200121022002221 in words is "two hundred trillion, one hundred twenty-one billion, twenty-two million, two thousand, two hundred twenty-one".