12109837 has 4 divisors (see below), whose sum is σ = 12121920. Its totient is φ = 12097756.

The previous prime is 12109817. The next prime is 12109843. The reversal of 12109837 is 73890121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12109837 - 2¹¹ = 12107789 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a zygodrome in base 5.

It is a junction number, because it is equal to n+sod(n) for n = 12109799 and 12109808.

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, 4387 + ... + 6592.

It is an arithmetic number, because the mean of its divisors is an integer number (3030480).

Almost surely, 2^12109837 is an apocalyptic number.

It is an amenable number.

12109837 is a deficient number, since it is larger than the sum of its proper divisors (12083).

12109837 is a wasteful number, since it uses less digits than its factorization.

12109837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12082.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 12109837 is about 3479.9191082552. The cubic root of 12109837 is about 229.6392390960.

Adding to 12109837 its reverse (73890121), we get a palindrome (85999958).

The spelling of 12109837 in words is "twelve million, one hundred nine thousand, eight hundred thirty-seven".