12116155 has 8 divisors (see below), whose sum is σ = 15394752. Its totient is φ = 9122688.

The previous prime is 12116149. The next prime is 12116179. The reversal of 12116155 is 55161121.

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 not a de Polignac number, because 12116155 - 2⁵ = 12116123 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71187 + ... + 71356.

It is an arithmetic number, because the mean of its divisors is an integer number (1924344).

Almost surely, 2^12116155 is an apocalyptic number.

12116155 is a deficient number, since it is larger than the sum of its proper divisors (3278597).

12116155 is a wasteful number, since it uses less digits than its factorization.

12116155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142565.

The product of its digits is 300, while the sum is 22.

The square root of 12116155 is about 3480.8267696052. The cubic root of 12116155 is about 229.6791683004.

Adding to 12116155 its reverse (55161121), we get a palindrome (67277276).

The spelling of 12116155 in words is "twelve million, one hundred sixteen thousand, one hundred fifty-five".