12221127 has 12 divisors (see below), whose sum is σ = 17836000. Its totient is φ = 8062848.

The previous prime is 12221117. The next prime is 12221171. The reversal of 12221127 is 72112221.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-12221127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6127 + ... + 7872.

Almost surely, 2^12221127 is an apocalyptic number.

12221127 is a deficient number, since it is larger than the sum of its proper divisors (5614873).

12221127 is a wasteful number, since it uses less digits than its factorization.

12221127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14102 (or 14099 counting only the distinct ones).

The product of its digits is 112, while the sum is 18.

The square root of 12221127 is about 3495.8728523789. The cubic root of 12221127 is about 230.3405603866.

Adding to 12221127 its reverse (72112221), we get a palindrome (84333348).

The spelling of 12221127 in words is "twelve million, two hundred twenty-one thousand, one hundred twenty-seven".