200111210121211 has 4 divisors (see below), whose sum is σ = 202092509231424. Its totient is φ = 198129911011000.

The previous prime is 200111210121161. The next prime is 200111210121217. The reversal of 200111210121211 is 112121012111002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200111210121211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200111210121217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 990649554955 + ... + 990649555156.

It is an arithmetic number, because the mean of its divisors is an integer number (50523127307856).

Almost surely, 2^{200111210121211} is an apocalyptic number.

200111210121211 is a deficient number, since it is larger than the sum of its proper divisors (1981299110213).

200111210121211 is a wasteful number, since it uses less digits than its factorization.

200111210121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1981299110212.

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

Adding to 200111210121211 its reverse (112121012111002), we get a palindrome (312232222232213).

The spelling of 200111210121211 in words is "two hundred trillion, one hundred eleven billion, two hundred ten million, one hundred twenty-one thousand, two hundred eleven".