200121221203203 has 64 divisors (see below), whose sum is σ = 276020848696320. Its totient is φ = 128923647756288.

The previous prime is 200121221203199. The next prime is 200121221203303. The reversal of 200121221203203 is 302302122121002.

It is not a de Polignac number, because 200121221203203 - 2² = 200121221203199 is a prime.

It is a super-2 number, since 2×200121221203203² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 200121221203203.

It is not an unprimeable number, because it can be changed into a prime (200121221203303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2175255601 + ... + 2175347597.

It is an arithmetic number, because the mean of its divisors is an integer number (4312825760880).

Almost surely, 2^{200121221203203} is an apocalyptic number.

200121221203203 is a deficient number, since it is larger than the sum of its proper divisors (75899627493117).

200121221203203 is a wasteful number, since it uses less digits than its factorization.

200121221203203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93228.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 200121221203203 its reverse (302302122121002), we get a palindrome (502423343324205).

The spelling of 200121221203203 in words is "two hundred trillion, one hundred twenty-one billion, two hundred twenty-one million, two hundred three thousand, two hundred three".