12266227009 has 3 divisors (see below), whose sum is σ = 12266337763. Its totient is φ = 12266116256.

The previous prime is 12266226989. The next prime is 12266227067. The reversal of 12266227009 is 90072266221.

It is a happy number.

The square root of 12266227009 is 110753.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 90072266221 = 7 ⋅12867466603.

It can be written as a sum of positive squares in only one way, i.e., 12032993025 + 233233984 = 109695^2 + 15272^2 .

It is not a de Polignac number, because 12266227009 - 2⁵ = 12266226977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12266227069) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 55377 + ... + 166129.

Almost surely, 2^12266227009 is an apocalyptic number.

12266227009 is the 110753-rd square number.

12266227009 is the 55377-th centered octagonal number.

It is an amenable number.

12266227009 is a deficient number, since it is larger than the sum of its proper divisors (110754).

12266227009 is an frugal number, since it uses more digits than its factorization.

12266227009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221506 (or 110753 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The spelling of 12266227009 in words is "twelve billion, two hundred sixty-six million, two hundred twenty-seven thousand, nine".