12109814 has 8 divisors (see below), whose sum is σ = 19233288. Its totient is φ = 5698720.

The previous prime is 12109697. The next prime is 12109817. The reversal of 12109814 is 41890121.

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

It is a super-2 number, since 2×12109814² = 293295190229192, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12109817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178052 + ... + 178119.

It is an arithmetic number, because the mean of its divisors is an integer number (2404161).

Almost surely, 2^12109814 is an apocalyptic number.

12109814 is a deficient number, since it is larger than the sum of its proper divisors (7123474).

12109814 is a wasteful number, since it uses less digits than its factorization.

12109814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356190.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 12109814 is about 3479.9158035792. The cubic root of 12109814 is about 229.6390937127.

Adding to 12109814 its reverse (41890121), we get a palindrome (53999935).

The spelling of 12109814 in words is "twelve million, one hundred nine thousand, eight hundred fourteen".