12212867 has 2 divisors, whose sum is σ = 12212868. Its totient is φ = 12212866.

The previous prime is 12212861. The next prime is 12212881. The reversal of 12212867 is 76821221.

12212867 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12212867 is a prime.

It is not a weakly prime, because it can be changed into another prime (12212861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106433 + 6106434.

It is an arithmetic number, because the mean of its divisors is an integer number (6106434).

Almost surely, 2^12212867 is an apocalyptic number.

12212867 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212867 is an equidigital number, since it uses as much as digits as its factorization.

12212867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 29.

The square root of 12212867 is about 3494.6912596108. The cubic root of 12212867 is about 230.2886545944.

The spelling of 12212867 in words is "twelve million, two hundred twelve thousand, eight hundred sixty-seven".