12081117 has 8 divisors (see below), whose sum is σ = 16124320. Its totient is φ = 8046000.

The previous prime is 12081073. The next prime is 12081119. The reversal of 12081117 is 71118021.

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

It is not a de Polignac number, because 12081117 - 2¹¹ = 12079069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12081093 and 12081102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12081119) 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, 4242 + ... + 6492.

It is an arithmetic number, because the mean of its divisors is an integer number (2015540).

Almost surely, 2^12081117 is an apocalyptic number.

It is an amenable number.

12081117 is a deficient number, since it is larger than the sum of its proper divisors (4043203).

12081117 is a wasteful number, since it uses less digits than its factorization.

12081117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4043.

The product of its (nonzero) digits is 112, while the sum is 21.

The square root of 12081117 is about 3475.7901260001. The cubic root of 12081117 is about 229.4575559558.

Adding to 12081117 its reverse (71118021), we get a palindrome (83199138).

The spelling of 12081117 in words is "twelve million, eighty-one thousand, one hundred seventeen".