12271009 has 9 divisors (see below), whose sum is σ = 12792819. Its totient is φ = 11770080.

The previous prime is 12271003. The next prime is 12271019. The reversal of 12271009 is 90017221.

The square root of 12271009 is 3503.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 216225 + 12054784 = 465^2 + 3472^2 .

It is not a de Polignac number, because 12271009 - 2¹¹ = 12268961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12271003) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 108537 + ... + 108649.

Almost surely, 2^12271009 is an apocalyptic number.

12271009 is the 3503-rd square number.

12271009 is the 1752-nd centered octagonal number.

It is an amenable number.

12271009 is a deficient number, since it is larger than the sum of its proper divisors (521810).

12271009 is an frugal number, since it uses more digits than its factorization.

12271009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 22.

The cubic root of 12271009 is about 230.6535225432.

The spelling of 12271009 in words is "twelve million, two hundred seventy-one thousand, nine".