11243344221 has 12 divisors (see below), whose sum is σ = 17095143520. Its totient is φ = 7101059400.

The previous prime is 11243344201. The next prime is 11243344243. The reversal of 11243344221 is 12244334211.

11243344221 is a `hidden beast` number, since 1 + 1 + 2 + 433 + 4 + 4 + 221 = 666.

It is not a de Polignac number, because 11243344221 - 2⁷ = 11243344093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11243344201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32875105 + ... + 32875446.

Almost surely, 2^11243344221 is an apocalyptic number.

It is an amenable number.

11243344221 is a deficient number, since it is larger than the sum of its proper divisors (5851799299).

11243344221 is a wasteful number, since it uses less digits than its factorization.

11243344221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65750576 (or 65750573 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

Adding to 11243344221 its reverse (12244334211), we get a palindrome (23487678432).

The spelling of 11243344221 in words is "eleven billion, two hundred forty-three million, three hundred forty-four thousand, two hundred twenty-one".