200121220112001 has 16 divisors (see below), whose sum is σ = 271205996705280. Its totient is φ = 131225351080320.

The previous prime is 200121220111931. The next prime is 200121220112017. The reversal of 200121220112001 is 100211022121002.

It is not a de Polignac number, because 200121220112001 - 2¹⁹ = 200121219587713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (200121220110001) 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, 7433565 + ... + 21342453.

It is an arithmetic number, because the mean of its divisors is an integer number (16950374794080).

Almost surely, 2^{200121220112001} is an apocalyptic number.

It is an amenable number.

200121220112001 is a deficient number, since it is larger than the sum of its proper divisors (71084776593279).

200121220112001 is a wasteful number, since it uses less digits than its factorization.

200121220112001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13987576.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 200121220112001 its reverse (100211022121002), we get a palindrome (300332242233003).

The spelling of 200121220112001 in words is "two hundred trillion, one hundred twenty-one billion, two hundred twenty million, one hundred twelve thousand, one".