12117867 has 8 divisors (see below), whose sum is σ = 16462224. Its totient is φ = 7926048.

The previous prime is 12117863. The next prime is 12117883. The reversal of 12117867 is 76871121.

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

It is not a de Polignac number, because 12117867 - 2² = 12117863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12117863) 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, 37948 + ... + 38265.

It is an arithmetic number, because the mean of its divisors is an integer number (2057778).

Almost surely, 2^12117867 is an apocalyptic number.

12117867 is a deficient number, since it is larger than the sum of its proper divisors (4344357).

12117867 is an equidigital number, since it uses as much as digits as its factorization.

12117867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76269.

The product of its digits is 4704, while the sum is 33.

The square root of 12117867 is about 3481.0726795056. The cubic root of 12117867 is about 229.6899855995.

Adding to 12117867 its reverse (76871121), we get a palindrome (88988988).

The spelling of 12117867 in words is "twelve million, one hundred seventeen thousand, eight hundred sixty-seven".