200111111111 has 4 divisors (see below), whose sum is σ = 200112136224. Its totient is φ = 200110086000.

The previous prime is 200111111099. The next prime is 200111111113. The reversal of 200111111111 is 111111111002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 200111111111 - 2³⁰ = 199037369287 is a prime.

It is a Duffinian number.

200111111111 is a modest number, since divided by 1111111 gives 20011 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 200111111092 and 200111111101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200111111113) 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 3 ways as a sum of consecutive naturals, for example, 119030 + ... + 643731.

It is an arithmetic number, because the mean of its divisors is an integer number (50028034056).

Almost surely, 2^200111111111 is an apocalyptic number.

200111111111 is a deficient number, since it is larger than the sum of its proper divisors (1025113).

200111111111 is an equidigital number, since it uses as much as digits as its factorization.

200111111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025112.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 200111111111 its reverse (111111111002), we get a palindrome (311222222113).

The spelling of 200111111111 in words is "two hundred billion, one hundred eleven million, one hundred eleven thousand, one hundred eleven".