12267209 has 2 divisors, whose sum is σ = 12267210. Its totient is φ = 12267208.

The previous prime is 12267193. The next prime is 12267223. The reversal of 12267209 is 90276221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6250000 + 6017209 = 2500^2 + 2453^2 .

It is a cyclic number.

It is not a de Polignac number, because 12267209 - 2⁴ = 12267193 is a prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (12266209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6133604 + 6133605.

It is an arithmetic number, because the mean of its divisors is an integer number (6133605).

Almost surely, 2^12267209 is an apocalyptic number.

It is an amenable number.

12267209 is a deficient number, since it is larger than the sum of its proper divisors (1).

12267209 is an equidigital number, since it uses as much as digits as its factorization.

12267209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 12267209 is about 3502.4575657672. The cubic root of 12267209 is about 230.6297110301.

The spelling of 12267209 in words is "twelve million, two hundred sixty-seven thousand, two hundred nine".