12200009 has 2 divisors, whose sum is σ = 12200010. Its totient is φ = 12200008.

The previous prime is 12199997. The next prime is 12200011. The reversal of 12200009 is 90000221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8832784 + 3367225 = 2972^2 + 1835^2 .

It is an emirp because it is prime and its reverse (90000221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12200009 is a prime.

Together with 12200011, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12199966 and 12200002.

It is not a weakly prime, because it can be changed into another prime (12200029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6100004 + 6100005.

It is an arithmetic number, because the mean of its divisors is an integer number (6100005).

Almost surely, 2^12200009 is an apocalyptic number.

It is an amenable number.

12200009 is a deficient number, since it is larger than the sum of its proper divisors (1).

12200009 is an equidigital number, since it uses as much as digits as its factorization.

12200009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 12200009 is about 3492.8511276606. The cubic root of 12200009 is about 230.2078084048.

The spelling of 12200009 in words is "twelve million, two hundred thousand, nine".