12116655 has 16 divisors (see below), whose sum is σ = 21540960. Its totient is φ = 6462144.

The previous prime is 12116641. The next prime is 12116659. The reversal of 12116655 is 55661121.

It is a happy number.

12116655 is a `hidden beast` number, since 1 + 2 + 1 + 1 + 6 + 655 = 666.

12116655 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12116655 - 2⁶ = 12116591 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12116659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44742 + ... + 45011.

It is an arithmetic number, because the mean of its divisors is an integer number (1346310).

Almost surely, 2^12116655 is an apocalyptic number.

12116655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12116655 is a deficient number, since it is larger than the sum of its proper divisors (9424305).

12116655 is an equidigital number, since it uses as much as digits as its factorization.

12116655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89767 (or 89761 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 12116655 is about 3480.8985908814. The cubic root of 12116655 is about 229.6823276636.

Adding to 12116655 its reverse (55661121), we get a palindrome (67777776).

The spelling of 12116655 in words is "twelve million, one hundred sixteen thousand, six hundred fifty-five".