12581227 has 2 divisors, whose sum is σ = 12581228. Its totient is φ = 12581226.

The previous prime is 12581183. The next prime is 12581237. The reversal of 12581227 is 72218521.

12581227 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (72218521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12581227 - 2¹⁹ = 12056939 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12581195 and 12581204.

It is not a weakly prime, because it can be changed into another prime (12581237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6290613 + 6290614.

It is an arithmetic number, because the mean of its divisors is an integer number (6290614).

Almost surely, 2^12581227 is an apocalyptic number.

12581227 is a deficient number, since it is larger than the sum of its proper divisors (1).

12581227 is an equidigital number, since it uses as much as digits as its factorization.

12581227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2240, while the sum is 28.

The square root of 12581227 is about 3547.0025373546. The cubic root of 12581227 is about 232.5810531755.

Adding to 12581227 its reverse (72218521), we get a palindrome (84799748).

It can be divided in two parts, 1258 and 1227, that added together give a triangular number (2485 = T₇₀).

The spelling of 12581227 in words is "twelve million, five hundred eighty-one thousand, two hundred twenty-seven".