12867229 has 2 divisors, whose sum is σ = 12867230. Its totient is φ = 12867228.

The previous prime is 12867227. The next prime is 12867247. The reversal of 12867229 is 92276821.

12867229 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7236100 + 5631129 = 2690^2 + 2373^2 .

It is a cyclic number.

It is not a de Polignac number, because 12867229 - 2¹ = 12867227 is a prime.

Together with 12867227, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12867223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6433614 + 6433615.

It is an arithmetic number, because the mean of its divisors is an integer number (6433615).

Almost surely, 2^12867229 is an apocalyptic number.

It is an amenable number.

12867229 is a deficient number, since it is larger than the sum of its proper divisors (1).

12867229 is an equidigital number, since it uses as much as digits as its factorization.

12867229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 37.

The square root of 12867229 is about 3587.0919977051. The cubic root of 12867229 is about 234.3302432819.

It can be divided in two parts, 1286 and 7229, that added together give a triangular number (8515 = T₁₃₀).

The spelling of 12867229 in words is "twelve million, eight hundred sixty-seven thousand, two hundred twenty-nine".