11110111201111 has 4 divisors (see below), whose sum is σ = 11964735139672. Its totient is φ = 10255487262552.

The previous prime is 11110111201109. The next prime is 11110111201121. The reversal of 11110111201111 is 11110211101111.

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 11110111201111 - 2¹ = 11110111201109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 854623938547 = 11110111201111 / (1 + 1 + 1 + 1 + 0 + 1 + 1 + 1 + 2 + 0 + 1 + 1 + 1 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11110111201091 and 11110111201100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11110111201121) 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, 427311969261 + ... + 427311969286.

It is an arithmetic number, because the mean of its divisors is an integer number (2991183784918).

Almost surely, 2^{11110111201111} is an apocalyptic number.

11110111201111 is a deficient number, since it is larger than the sum of its proper divisors (854623938561).

11110111201111 is an equidigital number, since it uses as much as digits as its factorization.

11110111201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854623938560.

The product of its (nonzero) digits is 2, while the sum is 13.

Adding to 11110111201111 its reverse (11110211101111), we get a palindrome (22220322302222).

The spelling of 11110111201111 in words is "eleven trillion, one hundred ten billion, one hundred eleven million, two hundred one thousand, one hundred eleven".