12166019 has 2 divisors, whose sum is σ = 12166020. Its totient is φ = 12166018.

The previous prime is 12166013. The next prime is 12166027. The reversal of 12166019 is 91066121.

12166019 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 not a de Polignac number, because 12166019 - 2¹² = 12161923 is a prime.

It is a super-2 number, since 2×12166019² = 296024036616722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12166013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6083009 + 6083010.

It is an arithmetic number, because the mean of its divisors is an integer number (6083010).

Almost surely, 2^12166019 is an apocalyptic number.

12166019 is a deficient number, since it is larger than the sum of its proper divisors (1).

12166019 is an equidigital number, since it uses as much as digits as its factorization.

12166019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 12166019 is about 3487.9820813760. The cubic root of 12166019 is about 229.9938183594.

The spelling of 12166019 in words is "twelve million, one hundred sixty-six thousand, nineteen".