12002209 has 2 divisors, whose sum is σ = 12002210. Its totient is φ = 12002208.

The previous prime is 12002189. The next prime is 12002213. The reversal of 12002209 is 90220021.

It is a happy number.

12002209 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 can be written as a sum of positive squares in only one way, i.e., 11696400 + 305809 = 3420^2 + 553^2 .

It is an emirp because it is prime and its reverse (90220021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12002209 - 2⁹ = 12001697 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12002192 and 12002201.

It is not a weakly prime, because it can be changed into another prime (12002279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6001104 + 6001105.

It is an arithmetic number, because the mean of its divisors is an integer number (6001105).

Almost surely, 2^12002209 is an apocalyptic number.

It is an amenable number.

12002209 is a deficient number, since it is larger than the sum of its proper divisors (1).

12002209 is an equidigital number, since it uses as much as digits as its factorization.

12002209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 12002209 is about 3464.4204421519. The cubic root of 12002209 is about 228.9568958363.

The spelling of 12002209 in words is "twelve million, two thousand, two hundred nine".