11144221 has 12 divisors (see below), whose sum is σ = 12648832. Its totient is φ = 9801000.

The previous prime is 11144219. The next prime is 11144261. The reversal of 11144221 is 12244111.

It is a happy number.

It is not a de Polignac number, because 11144221 - 2¹ = 11144219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11144195 and 11144204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11144261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2266 + ... + 5236.

Almost surely, 2^11144221 is an apocalyptic number.

11144221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11144221 is a deficient number, since it is larger than the sum of its proper divisors (1504611).

11144221 is a wasteful number, since it uses less digits than its factorization.

11144221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3024 (or 3013 counting only the distinct ones).

The product of its digits is 64, while the sum is 16.

The square root of 11144221 is about 3338.2961222756. The cubic root of 11144221 is about 223.3657454010.

Adding to 11144221 its reverse (12244111), we get a palindrome (23388332).

It can be divided in two parts, 1114 and 4221, that added together give a palindrome (5335).

The spelling of 11144221 in words is "eleven million, one hundred forty-four thousand, two hundred twenty-one".