11443121 has 8 divisors (see below), whose sum is σ = 11975040. Its totient is φ = 10914112.

The previous prime is 11443099. The next prime is 11443129. The reversal of 11443121 is 12134411.

It is a happy number.

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 11443121 - 2¹⁰ = 11442097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11443121.

It is not an unprimeable number, because it can be changed into a prime (11443129) 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, 13220 + ... + 14058.

It is an arithmetic number, because the mean of its divisors is an integer number (1496880).

Almost surely, 2^11443121 is an apocalyptic number.

It is an amenable number.

11443121 is a deficient number, since it is larger than the sum of its proper divisors (531919).

11443121 is an equidigital number, since it uses as much as digits as its factorization.

11443121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455.

The product of its digits is 96, while the sum is 17.

The square root of 11443121 is about 3382.7682450916. The cubic root of 11443121 is about 225.3451230269.

Adding to 11443121 its reverse (12134411), we get a palindrome (23577532).

The spelling of 11443121 in words is "eleven million, four hundred forty-three thousand, one hundred twenty-one".