12715229 has 4 divisors (see below), whose sum is σ = 13010976. Its totient is φ = 12419484.

The previous prime is 12715211. The next prime is 12715249. The reversal of 12715229 is 92251721.

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, and also an emirpimes, since its reverse is a distinct semiprime: 92251721 = 263 ⋅350767.

It is a cyclic number.

It is not a de Polignac number, because 12715229 - 2²⁰ = 11666653 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12715249) 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, 147809 + ... + 147894.

It is an arithmetic number, because the mean of its divisors is an integer number (3252744).

Almost surely, 2^12715229 is an apocalyptic number.

It is an amenable number.

12715229 is a deficient number, since it is larger than the sum of its proper divisors (295747).

12715229 is an equidigital number, since it uses as much as digits as its factorization.

12715229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295746.

The product of its digits is 2520, while the sum is 29.

The square root of 12715229 is about 3565.8419763080. The cubic root of 12715229 is about 233.4038750434.

The spelling of 12715229 in words is "twelve million, seven hundred fifteen thousand, two hundred twenty-nine".