201111120010111 has 4 divisors (see below), whose sum is σ = 201117556215072. Its totient is φ = 201104683805152.

The previous prime is 201111120010079. The next prime is 201111120010117. The reversal of 201111120010111 is 111010021111102.

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

It is a cyclic number.

It is not a de Polignac number, because 201111120010111 - 2⁵ = 201111120010079 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201111120010091 and 201111120010100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201111120010117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3218055610 + ... + 3218118103.

It is an arithmetic number, because the mean of its divisors is an integer number (50279389053768).

Almost surely, 2^{201111120010111} is an apocalyptic number.

201111120010111 is a deficient number, since it is larger than the sum of its proper divisors (6436204961).

201111120010111 is an equidigital number, since it uses as much as digits as its factorization.

201111120010111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6436204960.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 201111120010111 its reverse (111010021111102), we get a palindrome (312121141121213).

The spelling of 201111120010111 in words is "two hundred one trillion, one hundred eleven billion, one hundred twenty million, ten thousand, one hundred eleven".