12512227 has 16 divisors (see below), whose sum is σ = 15482880. Its totient is φ = 9846432.

The previous prime is 12512191. The next prime is 12512231. The reversal of 12512227 is 72221521.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12512227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12512198 and 12512207.

It is not an unprimeable number, because it can be changed into a prime (12512237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32478 + ... + 32860.

It is an arithmetic number, because the mean of its divisors is an integer number (967680).

Almost surely, 2^12512227 is an apocalyptic number.

12512227 is a deficient number, since it is larger than the sum of its proper divisors (2970653).

12512227 is a wasteful number, since it uses less digits than its factorization.

12512227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762.

The product of its digits is 560, while the sum is 22.

The square root of 12512227 is about 3537.2626422136. The cubic root of 12512227 is about 232.1550872971.

Adding to 12512227 its reverse (72221521), we get a palindrome (84733748).

The spelling of 12512227 in words is "twelve million, five hundred twelve thousand, two hundred twenty-seven".