12261226 has 16 divisors (see below), whose sum is σ = 18810504. Its totient is φ = 5992704.

The previous prime is 12261211. The next prime is 12261253. The reversal of 12261226 is 62216221.

It can be written as a sum of positive squares in 4 ways, for example, as 7425625 + 4835601 = 2725^2 + 2199^2 .

It is a super-3 number, since 3×12261226³ (a number of 22 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12261197 and 12261206.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19696 + ... + 20308.

Almost surely, 2^12261226 is an apocalyptic number.

12261226 is a deficient number, since it is larger than the sum of its proper divisors (6549278).

12261226 is a wasteful number, since it uses less digits than its factorization.

12261226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825.

The product of its digits is 576, while the sum is 22.

The square root of 12261226 is about 3501.6033470398. The cubic root of 12261226 is about 230.5922104611.

Adding to 12261226 its reverse (62216221), we get a palindrome (74477447).

The spelling of 12261226 in words is "twelve million, two hundred sixty-one thousand, two hundred twenty-six".