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12266209 is a prime number
BaseRepresentation
bin101110110010…
…101011100001
3212002012002001
4232302223201
511120004314
61114524001
7206155354
oct56625341
925065061
1012266209
116a1886a
124136601
132706217
1418b429b
151124674
hexbb2ae1

12266209 has 2 divisors, whose sum is σ = 12266210. Its totient is φ = 12266208.

The previous prime is 12266179. The next prime is 12266213. The reversal of 12266209 is 90266221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11881809 + 384400 = 3447^2 + 620^2 .

It is an emirp because it is prime and its reverse (90266221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12266209 - 219 = 11741921 is a prime.

It is not a weakly prime, because it can be changed into another prime (12266249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6133104 + 6133105.

It is an arithmetic number, because the mean of its divisors is an integer number (6133105).

Almost surely, 212266209 is an apocalyptic number.

It is an amenable number.

12266209 is a deficient number, since it is larger than the sum of its proper divisors (1).

12266209 is an equidigital number, since it uses as much as digits as its factorization.

12266209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 12266209 is about 3502.3148059533. The cubic root of 12266209 is about 230.6234440251.

The spelling of 12266209 in words is "twelve million, two hundred sixty-six thousand, two hundred nine".