12220227 has 14 divisors (see below), whose sum is σ = 18323052. Its totient is φ = 8146332.

The previous prime is 12220217. The next prime is 12220237. The reversal of 12220227 is 72202221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12220217) and next prime (12220237).

It is not a de Polignac number, because 12220227 - 2¹¹ = 12218179 is a prime.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (12220217) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 7653 + ... + 9110.

Almost surely, 2^12220227 is an apocalyptic number.

12220227 is a deficient number, since it is larger than the sum of its proper divisors (6102825).

12220227 is an frugal number, since it uses more digits than its factorization.

12220227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16781 (or 16766 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 12220227 is about 3495.7441267919. The cubic root of 12220227 is about 230.3349059273.

Adding to 12220227 its reverse (72202221), we get a palindrome (84422448).

The spelling of 12220227 in words is "twelve million, two hundred twenty thousand, two hundred twenty-seven".