12270226 has 16 divisors (see below), whose sum is σ = 19567224. Its totient is φ = 5750784.

The previous prime is 12270221. The next prime is 12270229. The reversal of 12270226 is 62207221.

It can be written as a sum of positive squares in 4 ways, for example, as 10017225 + 2253001 = 3165^2 + 1501^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12270197 and 12270206.

It is not an unprimeable number, because it can be changed into a prime (12270221) 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 in 7 ways as a sum of consecutive naturals, for example, 10066 + ... + 11218.

Almost surely, 2^12270226 is an apocalyptic number.

12270226 is a deficient number, since it is larger than the sum of its proper divisors (7296998).

12270226 is a wasteful number, since it uses less digits than its factorization.

12270226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1485.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 12270226 is about 3502.8882368697. Note that the first 3 decimals coincide. The cubic root of 12270226 is about 230.6486165204.

Adding to 12270226 its reverse (62207221), we get a palindrome (74477447).

The spelling of 12270226 in words is "twelve million, two hundred seventy thousand, two hundred twenty-six".