200121112211 has 4 divisors (see below), whose sum is σ = 200447574672. Its totient is φ = 199794649752.

The previous prime is 200121112129. The next prime is 200121112249. The reversal of 200121112211 is 112211121002.

200121112211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 200121112211 - 2²² = 200116917907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200121112271) 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 3 ways as a sum of consecutive naturals, for example, 163230311 + ... + 163231536.

It is an arithmetic number, because the mean of its divisors is an integer number (50111893668).

Almost surely, 2^200121112211 is an apocalyptic number.

200121112211 is a deficient number, since it is larger than the sum of its proper divisors (326462461).

200121112211 is an equidigital number, since it uses as much as digits as its factorization.

200121112211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326462460.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 200121112211 its reverse (112211121002), we get a palindrome (312332233213).

The spelling of 200121112211 in words is "two hundred billion, one hundred twenty-one million, one hundred twelve thousand, two hundred eleven".