12862229 has 2 divisors, whose sum is σ = 12862230. Its totient is φ = 12862228.

The previous prime is 12862219. The next prime is 12862231. The reversal of 12862229 is 92226821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12439729 + 422500 = 3527^2 + 650^2 .

It is an emirp because it is prime and its reverse (92226821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12862229 - 2²⁰ = 11813653 is a prime.

Together with 12862231, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12862195 and 12862204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12862219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6431114 + 6431115.

It is an arithmetic number, because the mean of its divisors is an integer number (6431115).

Almost surely, 2^12862229 is an apocalyptic number.

It is an amenable number.

12862229 is a deficient number, since it is larger than the sum of its proper divisors (1).

12862229 is an equidigital number, since it uses as much as digits as its factorization.

12862229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 32.

The square root of 12862229 is about 3586.3949866126. The cubic root of 12862229 is about 234.2998870176.

The spelling of 12862229 in words is "twelve million, eight hundred sixty-two thousand, two hundred twenty-nine".