12244013 has 4 divisors (see below), whose sum is σ = 12287868. Its totient is φ = 12200160.

The previous prime is 12244009. The next prime is 12244033. The reversal of 12244013 is 31044221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3020644 + 9223369 = 1738^2 + 3037^2 .

It is a cyclic number.

It is not a de Polignac number, because 12244013 - 2² = 12244009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12243982 and 12244000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12244033) 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, 21506 + ... + 22067.

It is an arithmetic number, because the mean of its divisors is an integer number (3071967).

Almost surely, 2^12244013 is an apocalyptic number.

It is an amenable number.

12244013 is a deficient number, since it is larger than the sum of its proper divisors (43855).

12244013 is an equidigital number, since it uses as much as digits as its factorization.

12244013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43854.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 12244013 is about 3499.1446097582. The cubic root of 12244013 is about 230.4842538137.

Adding to 12244013 its reverse (31044221), we get a palindrome (43288234).

The spelling of 12244013 in words is "twelve million, two hundred forty-four thousand, thirteen".