12205867 has 2 divisors, whose sum is σ = 12205868. Its totient is φ = 12205866.

The previous prime is 12205849. The next prime is 12205877. The reversal of 12205867 is 76850221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12205867 - 2²³ = 3817259 is a prime.

It is not a weakly prime, because it can be changed into another prime (12205877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6102933 + 6102934.

It is an arithmetic number, because the mean of its divisors is an integer number (6102934).

Almost surely, 2^12205867 is an apocalyptic number.

12205867 is a deficient number, since it is larger than the sum of its proper divisors (1).

12205867 is an equidigital number, since it uses as much as digits as its factorization.

12205867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 12205867 is about 3493.6895969734. The cubic root of 12205867 is about 230.2446483108.

The spelling of 12205867 in words is "twelve million, two hundred five thousand, eight hundred sixty-seven".