12116111 has 4 divisors (see below), whose sum is σ = 13846992. Its totient is φ = 10385232.

The previous prime is 12116107. The next prime is 12116123. The reversal of 12116111 is 11161121.

12116111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11161121 = 887 ⋅12583.

It is a cyclic number.

It is not a de Polignac number, because 12116111 - 2² = 12116107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12116141) 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, 865430 + ... + 865443.

It is an arithmetic number, because the mean of its divisors is an integer number (3461748).

Almost surely, 2^12116111 is an apocalyptic number.

12116111 is a deficient number, since it is larger than the sum of its proper divisors (1730881).

12116111 is an equidigital number, since it uses as much as digits as its factorization.

12116111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730880.

The product of its digits is 12, while the sum is 14.

The square root of 12116111 is about 3480.8204492619. The cubic root of 12116111 is about 229.6788902722.

Adding to 12116111 its reverse (11161121), we get a palindrome (23277232).

It can be divided in two parts, 1 and 2116111, that added together give a palindrome (2116112).

The spelling of 12116111 in words is "twelve million, one hundred sixteen thousand, one hundred eleven".