12226787 has 2 divisors, whose sum is σ = 12226788. Its totient is φ = 12226786.

The previous prime is 12226771. The next prime is 12226789. The reversal of 12226787 is 78762221.

12226787 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12226787 - 2⁴ = 12226771 is a prime.

Together with 12226789, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12226789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6113393 + 6113394.

It is an arithmetic number, because the mean of its divisors is an integer number (6113394).

Almost surely, 2^12226787 is an apocalyptic number.

12226787 is a deficient number, since it is larger than the sum of its proper divisors (1).

12226787 is an equidigital number, since it uses as much as digits as its factorization.

12226787 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18816, while the sum is 35.

The square root of 12226787 is about 3496.6822846807. The cubic root of 12226787 is about 230.3761142914.

The spelling of 12226787 in words is "twelve million, two hundred twenty-six thousand, seven hundred eighty-seven".