1244012223 has 16 divisors (see below), whose sum is σ = 1694748672. Its totient is φ = 811452000.

The previous prime is 1244012219. The next prime is 1244012239. The reversal of 1244012223 is 3222104421.

It is not a de Polignac number, because 1244012223 - 2² = 1244012219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1244012223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244012243) 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 in 15 ways as a sum of consecutive naturals, for example, 17158 + ... + 52748.

It is an arithmetic number, because the mean of its divisors is an integer number (105921792).

Almost surely, 2^1244012223 is an apocalyptic number.

1244012223 is a deficient number, since it is larger than the sum of its proper divisors (450736449).

1244012223 is a wasteful number, since it uses less digits than its factorization.

1244012223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35846.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1244012223 is about 35270.5574523568. The cubic root of 1244012223 is about 1075.4945546334.

Adding to 1244012223 its reverse (3222104421), we get a palindrome (4466116644).

The spelling of 1244012223 in words is "one billion, two hundred forty-four million, twelve thousand, two hundred twenty-three".