12117853 has 8 divisors (see below), whose sum is σ = 13675680. Its totient is φ = 10636080.

The previous prime is 12117851. The next prime is 12117863. The reversal of 12117853 is 35871121.

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 12117853 - 2¹ = 12117851 is a prime.

It is a super-2 number, since 2×12117853² = 293684722659218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12117851) 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, 18675 + ... + 19312.

It is an arithmetic number, because the mean of its divisors is an integer number (1709460).

Almost surely, 2^12117853 is an apocalyptic number.

It is an amenable number.

12117853 is a deficient number, since it is larger than the sum of its proper divisors (1557827).

12117853 is a wasteful number, since it uses less digits than its factorization.

12117853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38027.

The product of its digits is 1680, while the sum is 28.

The square root of 12117853 is about 3481.0706686306. The cubic root of 12117853 is about 229.6898971444.

Adding to 12117853 its reverse (35871121), we get a palindrome (47988974).

The spelling of 12117853 in words is "twelve million, one hundred seventeen thousand, eight hundred fifty-three".