201111101000111 has 4 divisors (see below), whose sum is σ = 201111135943224. Its totient is φ = 201111066057000.

The previous prime is 201111101000057. The next prime is 201111101000113. The reversal of 201111101000111 is 111000101111102.

It is a happy number.

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-201111101000111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201111101000092 and 201111101000101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201111101000113) 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, 6571880 + ... + 21104781.

It is an arithmetic number, because the mean of its divisors is an integer number (50277783985806).

Almost surely, 2^{201111101000111} is an apocalyptic number.

201111101000111 is a deficient number, since it is larger than the sum of its proper divisors (34943113).

201111101000111 is an equidigital number, since it uses as much as digits as its factorization.

201111101000111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34943112.

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

Adding to 201111101000111 its reverse (111000101111102), we get a palindrome (312111202111213).

The spelling of 201111101000111 in words is "two hundred one trillion, one hundred eleven billion, one hundred one million, one hundred eleven", and thus it is an aban number.