11143441221 has 8 divisors (see below), whose sum is σ = 16208641824. Its totient is φ = 6753600720.

The previous prime is 11143441207. The next prime is 11143441223. The reversal of 11143441221 is 12214434111.

It is a happy number.

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

It is not a de Polignac number, because 11143441221 - 2⁷ = 11143441093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11143441191 and 11143441200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11143441223) 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, 168839986 + ... + 168840051.

It is an arithmetic number, because the mean of its divisors is an integer number (2026080228).

Almost surely, 2^11143441221 is an apocalyptic number.

11143441221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11143441221 is a deficient number, since it is larger than the sum of its proper divisors (5065200603).

11143441221 is a wasteful number, since it uses less digits than its factorization.

11143441221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337680051.

The product of its digits is 768, while the sum is 24.

Adding to 11143441221 its reverse (12214434111), we get a palindrome (23357875332).

The spelling of 11143441221 in words is "eleven billion, one hundred forty-three million, four hundred forty-one thousand, two hundred twenty-one".