201110011111 has 2 divisors, whose sum is σ = 201110011112. Its totient is φ = 201110011110.

The previous prime is 201110011073. The next prime is 201110011177. The reversal of 201110011111 is 111110011102.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201110011111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201110011211) 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 as a sum of consecutive naturals, namely, 100555005555 + 100555005556.

It is an arithmetic number, because the mean of its divisors is an integer number (100555005556).

Almost surely, 2^201110011111 is an apocalyptic number.

201110011111 is a deficient number, since it is larger than the sum of its proper divisors (1).

201110011111 is an equidigital number, since it uses as much as digits as its factorization.

201110011111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 201110011111 its reverse (111110011102), we get a palindrome (312220022213).

Subtracting from 201110011111 its reverse (111110011102), we obtain a palindrome (90000000009).

The spelling of 201110011111 in words is "two hundred one billion, one hundred ten million, eleven thousand, one hundred eleven".