12225211 has 4 divisors (see below), whose sum is σ = 12646800. Its totient is φ = 11803624.

The previous prime is 12225209. The next prime is 12225221. The reversal of 12225211 is 11252221.

It is a happy number.

12225211 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12225211 - 2¹ = 12225209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12225221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210751 + ... + 210808.

It is an arithmetic number, because the mean of its divisors is an integer number (3161700).

Almost surely, 2^12225211 is an apocalyptic number.

12225211 is a deficient number, since it is larger than the sum of its proper divisors (421589).

12225211 is an equidigital number, since it uses as much as digits as its factorization.

12225211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421588.

The product of its digits is 80, while the sum is 16.

The square root of 12225211 is about 3496.4569209415. The cubic root of 12225211 is about 230.3662155786.

Adding to 12225211 its reverse (11252221), we get a palindrome (23477432).

The spelling of 12225211 in words is "twelve million, two hundred twenty-five thousand, two hundred eleven".