12116555 has 8 divisors (see below), whose sum is σ = 15861744. Its totient is φ = 8812000.

The previous prime is 12116551. The next prime is 12116557. The reversal of 12116555 is 55561121.

12116555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12116555 - 2² = 12116551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12116551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110096 + ... + 110205.

It is an arithmetic number, because the mean of its divisors is an integer number (1982718).

Almost surely, 2^12116555 is an apocalyptic number.

12116555 is a deficient number, since it is larger than the sum of its proper divisors (3745189).

12116555 is a wasteful number, since it uses less digits than its factorization.

12116555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220317.

The product of its digits is 1500, while the sum is 26.

The square root of 12116555 is about 3480.8842267447. The cubic root of 12116555 is about 229.6816957979.

Adding to 12116555 its reverse (55561121), we get a palindrome (67677676).

The spelling of 12116555 in words is "twelve million, one hundred sixteen thousand, five hundred fifty-five".