201110110391 has 2 divisors, whose sum is σ = 201110110392. Its totient is φ = 201110110390.

The previous prime is 201110110273. The next prime is 201110110403. The reversal of 201110110391 is 193011011102.

It is a happy number.

201110110391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201110110391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201110116391) 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 as a sum of consecutive naturals, namely, 100555055195 + 100555055196.

It is an arithmetic number, because the mean of its divisors is an integer number (100555055196).

Almost surely, 2^201110110391 is an apocalyptic number.

201110110391 is a deficient number, since it is larger than the sum of its proper divisors (1).

201110110391 is an equidigital number, since it uses as much as digits as its factorization.

201110110391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 20.

Adding to 201110110391 its reverse (193011011102), we get a palindrome (394121121493).

The spelling of 201110110391 in words is "two hundred one billion, one hundred ten million, one hundred ten thousand, three hundred ninety-one".