12443122 has 4 divisors (see below), whose sum is σ = 18664686. Its totient is φ = 6221560.

The previous prime is 12443107. The next prime is 12443129. The reversal of 12443122 is 22134421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22134421 = 313 ⋅70717.

It can be written as a sum of positive squares in only one way, i.e., 11634921 + 808201 = 3411^2 + 899^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12443122.

It is not an unprimeable number, because it can be changed into a prime (12443129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3110779 + ... + 3110782.

Almost surely, 2^12443122 is an apocalyptic number.

12443122 is a deficient number, since it is larger than the sum of its proper divisors (6221564).

12443122 is an equidigital number, since it uses as much as digits as its factorization.

12443122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6221563.

The product of its digits is 384, while the sum is 19.

The square root of 12443122 is about 3527.4809708913. The cubic root of 12443122 is about 231.7269007038.

Adding to 12443122 its reverse (22134421), we get a palindrome (34577543).

The spelling of 12443122 in words is "twelve million, four hundred forty-three thousand, one hundred twenty-two".