12130817 has 4 divisors (see below), whose sum is σ = 12184020. Its totient is φ = 12077616.

The previous prime is 12130771. The next prime is 12130849. The reversal of 12130817 is 71803121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11082241 + 1048576 = 3329^2 + 1024^2 .

It is a cyclic number.

It is not a de Polignac number, because 12130817 - 2⁶ = 12130753 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12130792 and 12130801.

It is not an unprimeable number, because it can be changed into a prime (12100817) 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, 26258 + ... + 26715.

It is an arithmetic number, because the mean of its divisors is an integer number (3046005).

Almost surely, 2^12130817 is an apocalyptic number.

It is an amenable number.

12130817 is a deficient number, since it is larger than the sum of its proper divisors (53203).

12130817 is an equidigital number, since it uses as much as digits as its factorization.

12130817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53202.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 12130817 is about 3482.9322416608. The cubic root of 12130817 is about 229.7717773967.

Adding to 12130817 its reverse (71803121), we get a palindrome (83933938).

The spelling of 12130817 in words is "twelve million, one hundred thirty thousand, eight hundred seventeen".