12161116 has 12 divisors (see below), whose sum is σ = 23216760. Its totient is φ = 5527760.

The previous prime is 12161113. The next prime is 12161117. The reversal of 12161116 is 61116121.

It is a junction number, because it is equal to n+sod(n) for n = 12161093 and 12161102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12161113) by changing a digit.

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, 138151 + ... + 138238.

It is an arithmetic number, because the mean of its divisors is an integer number (1934730).

Almost surely, 2^12161116 is an apocalyptic number.

It is an amenable number.

12161116 is a deficient number, since it is larger than the sum of its proper divisors (11055644).

12161116 is a wasteful number, since it uses less digits than its factorization.

12161116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276404 (or 276402 counting only the distinct ones).

The product of its digits is 72, while the sum is 19.

The square root of 12161116 is about 3487.2791686356. The cubic root of 12161116 is about 229.9629177772.

Adding to 12161116 its reverse (61116121), we get a palindrome (73277237).

It can be divided in two parts, 1216 and 1116, that added together give a palindrome (2332).

The spelling of 12161116 in words is "twelve million, one hundred sixty-one thousand, one hundred sixteen".