12111287 has 2 divisors, whose sum is σ = 12111288. Its totient is φ = 12111286.

The previous prime is 12111269. The next prime is 12111301. The reversal of 12111287 is 78211121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12111287 - 2¹⁴ = 12094903 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12111217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055643 + 6055644.

It is an arithmetic number, because the mean of its divisors is an integer number (6055644).

Almost surely, 2^12111287 is an apocalyptic number.

12111287 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111287 is an equidigital number, since it uses as much as digits as its factorization.

12111287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 224, while the sum is 23.

The square root of 12111287 is about 3480.1274401953. The cubic root of 12111287 is about 229.6484041962.

The spelling of 12111287 in words is "twelve million, one hundred eleven thousand, two hundred eighty-seven".