200121221101323 has 16 divisors (see below), whose sum is σ = 276038363058176. Its totient is φ = 128827947769920.

The previous prime is 200121221101301. The next prime is 200121221101327. The reversal of 200121221101323 is 323101122121002.

It is not a de Polignac number, because 200121221101323 - 2¹⁰ = 200121221100299 is a prime.

It is a super-2 number, since 2×200121221101323² (a number of 29 digits) contains 22 as substring.

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 200121221101323.

It is not an unprimeable number, because it can be changed into a prime (200121221101327) 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 15 ways as a sum of consecutive naturals, for example, 2354269411 + ... + 2354354412.

It is an arithmetic number, because the mean of its divisors is an integer number (17252397691136).

Almost surely, 2^{200121221101323} is an apocalyptic number.

200121221101323 is a deficient number, since it is larger than the sum of its proper divisors (75917141956853).

200121221101323 is a wasteful number, since it uses less digits than its factorization.

200121221101323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4708624314.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 200121221101323 its reverse (323101122121002), we get a palindrome (523222343222325).

The spelling of 200121221101323 in words is "two hundred trillion, one hundred twenty-one billion, two hundred twenty-one million, one hundred one thousand, three hundred twenty-three".