12144422 has 4 divisors (see below), whose sum is σ = 18216636. Its totient is φ = 6072210.

The previous prime is 12144413. The next prime is 12144463. The reversal of 12144422 is 22444121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22444121 = 7 ⋅3206303.

It is a junction number, because it is equal to n+sod(n) for n = 12144394 and 12144403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3036104 + ... + 3036107.

It is an arithmetic number, because the mean of its divisors is an integer number (4554159).

Almost surely, 2^12144422 is an apocalyptic number.

12144422 is a deficient number, since it is larger than the sum of its proper divisors (6072214).

12144422 is an equidigital number, since it uses as much as digits as its factorization.

12144422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6072213.

The product of its digits is 512, while the sum is 20.

The square root of 12144422 is about 3484.8847900612. The cubic root of 12144422 is about 229.8576434768.

Adding to 12144422 its reverse (22444121), we get a palindrome (34588543).

The spelling of 12144422 in words is "twelve million, one hundred forty-four thousand, four hundred twenty-two".