11144442221 has 8 divisors (see below), whose sum is σ = 12158376384. Its totient is φ = 10130641920.

The previous prime is 11144442187. The next prime is 11144442269. The reversal of 11144442221 is 12224444111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11144442221 - 2¹⁰ = 11144441197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11144441221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232685 + ... + 276461.

It is an arithmetic number, because the mean of its divisors is an integer number (1519797048).

Almost surely, 2^11144442221 is an apocalyptic number.

11144442221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11144442221 is a deficient number, since it is larger than the sum of its proper divisors (1013934163).

11144442221 is a wasteful number, since it uses less digits than its factorization.

11144442221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66931.

The product of its digits is 2048, while the sum is 26.

Adding to 11144442221 its reverse (12224444111), we get a palindrome (23368886332).

The spelling of 11144442221 in words is "eleven billion, one hundred forty-four million, four hundred forty-two thousand, two hundred twenty-one".