11152321 has 4 divisors (see below), whose sum is σ = 11162500. Its totient is φ = 11142144.

The previous prime is 11152307. The next prime is 11152331. The reversal of 11152321 is 12325111.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2062096 + 9090225 = 1436^2 + 3015^2 .

It is a cyclic number.

It is not a de Polignac number, because 11152321 - 2¹⁷ = 11021249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11152295 and 11152304.

It is not an unprimeable number, because it can be changed into a prime (11152331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3216 + ... + 5713.

It is an arithmetic number, because the mean of its divisors is an integer number (2790625).

Almost surely, 2^11152321 is an apocalyptic number.

It is an amenable number.

11152321 is a deficient number, since it is larger than the sum of its proper divisors (10179).

11152321 is an equidigital number, since it uses as much as digits as its factorization.

11152321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10178.

The product of its digits is 60, while the sum is 16.

The square root of 11152321 is about 3339.5090956606. The cubic root of 11152321 is about 223.4198489096.

Adding to 11152321 its reverse (12325111), we get a palindrome (23477432).

The spelling of 11152321 in words is "eleven million, one hundred fifty-two thousand, three hundred twenty-one".