12227405 has 4 divisors (see below), whose sum is σ = 14672892. Its totient is φ = 9781920.

The previous prime is 12227377. The next prime is 12227419. The reversal of 12227405 is 50472221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50472221 = 107 ⋅471703.

It can be written as a sum of positive squares in 2 ways, for example, as 9066121 + 3161284 = 3011^2 + 1778^2 .

It is not a de Polignac number, because 12227405 - 2¹⁰ = 12226381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1222736 + ... + 1222745.

It is an arithmetic number, because the mean of its divisors is an integer number (3668223).

Almost surely, 2^12227405 is an apocalyptic number.

It is an amenable number.

12227405 is a deficient number, since it is larger than the sum of its proper divisors (2445487).

12227405 is an equidigital number, since it uses as much as digits as its factorization.

12227405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2445486.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 12227405 is about 3496.7706530455. The cubic root of 12227405 is about 230.3799956610.

Adding to 12227405 its reverse (50472221), we get a palindrome (62699626).

The spelling of 12227405 in words is "twelve million, two hundred twenty-seven thousand, four hundred five".