12244121 has 4 divisors (see below), whose sum is σ = 12528912. Its totient is φ = 11959332.

The previous prime is 12244109. The next prime is 12244139. The reversal of 12244121 is 12144221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12144221 = 3319 ⋅3659.

It is a de Polignac number, because none of the positive numbers 2^k-12244121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12244121.

It is not an unprimeable number, because it can be changed into a prime (12244181) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 142331 + ... + 142416.

It is an arithmetic number, because the mean of its divisors is an integer number (3132228).

Almost surely, 2^12244121 is an apocalyptic number.

It is an amenable number.

12244121 is a deficient number, since it is larger than the sum of its proper divisors (284791).

12244121 is an equidigital number, since it uses as much as digits as its factorization.

12244121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284790.

The product of its digits is 128, while the sum is 17.

The square root of 12244121 is about 3499.1600420672. The cubic root of 12244121 is about 230.4849314844.

Adding to 12244121 its reverse (12144221), we get a palindrome (24388342).

The spelling of 12244121 in words is "twelve million, two hundred forty-four thousand, one hundred twenty-one".