111132311111 has 8 divisors (see below), whose sum is σ = 114982746480. Its totient is φ = 107283094912.

The previous prime is 111132311051. The next prime is 111132311167. The reversal of 111132311111 is 111113231111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111132311111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111132311111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111132310111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117365 + ... + 485838.

It is an arithmetic number, because the mean of its divisors is an integer number (14372843310).

Almost surely, 2^111132311111 is an apocalyptic number.

111132311111 is a deficient number, since it is larger than the sum of its proper divisors (3850435369).

111132311111 is an equidigital number, since it uses as much as digits as its factorization.

111132311111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609585.

The product of its digits is 18, while the sum is 17.

Adding to 111132311111 its reverse (111113231111), we get a palindrome (222245542222).

The spelling of 111132311111 in words is "one hundred eleven billion, one hundred thirty-two million, three hundred eleven thousand, one hundred eleven".