12130815 has 8 divisors (see below), whose sum is σ = 19409328. Its totient is φ = 6469760.

The previous prime is 12130771. The next prime is 12130849. The reversal of 12130815 is 51803121.

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

It is not a de Polignac number, because 12130815 - 2⁶ = 12130751 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12130791 and 12130800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 404346 + ... + 404375.

It is an arithmetic number, because the mean of its divisors is an integer number (2426166).

Almost surely, 2^12130815 is an apocalyptic number.

12130815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12130815 is a deficient number, since it is larger than the sum of its proper divisors (7278513).

12130815 is an equidigital number, since it uses as much as digits as its factorization.

12130815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808729.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 12130815 is about 3482.9319545463. The cubic root of 12130815 is about 229.7717647692.

Adding to 12130815 its reverse (51803121), we get a palindrome (63933936).

The spelling of 12130815 in words is "twelve million, one hundred thirty thousand, eight hundred fifteen".