12111116 has 12 divisors (see below), whose sum is σ = 21393288. Its totient is φ = 5998752.

The previous prime is 12111103. The next prime is 12111139. The reversal of 12111116 is 61111121.

12111116 is nontrivially palindromic in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 12111116.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13721 + ... + 14576.

It is an arithmetic number, because the mean of its divisors is an integer number (1782774).

Almost surely, 2^12111116 is an apocalyptic number.

It is an amenable number.

12111116 is a deficient number, since it is larger than the sum of its proper divisors (9282172).

12111116 is a wasteful number, since it uses less digits than its factorization.

12111116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28408 (or 28406 counting only the distinct ones).

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

The square root of 12111116 is about 3480.1028720427. The cubic root of 12111116 is about 229.6473233845.

Adding to 12111116 its reverse (61111121), we get a palindrome (73222237).

The spelling of 12111116 in words is "twelve million, one hundred eleven thousand, one hundred sixteen".