12227143 has 4 divisors (see below), whose sum is σ = 12525408. Its totient is φ = 11928880.

The previous prime is 12227081. The next prime is 12227167. The reversal of 12227143 is 34172221.

12227143 is digitally balanced in base 2, 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, and also an emirpimes, since its reverse is a distinct semiprime: 34172221 = 1583 ⋅21587.

It is a cyclic number.

It is not a de Polignac number, because 12227143 - 2⁹ = 12226631 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12228143) 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, 149071 + ... + 149152.

It is an arithmetic number, because the mean of its divisors is an integer number (3131352).

Almost surely, 2^12227143 is an apocalyptic number.

12227143 is a deficient number, since it is larger than the sum of its proper divisors (298265).

12227143 is an equidigital number, since it uses as much as digits as its factorization.

12227143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298264.

The product of its digits is 672, while the sum is 22.

The square root of 12227143 is about 3496.7331897072. The cubic root of 12227143 is about 230.3783501772.

Adding to 12227143 its reverse (34172221), we get a palindrome (46399364).

The spelling of 12227143 in words is "twelve million, two hundred twenty-seven thousand, one hundred forty-three".