11003440521 has 8 divisors (see below), whose sum is σ = 14688954880. Its totient is φ = 7326776592.

The previous prime is 11003440489. The next prime is 11003440523. The reversal of 11003440521 is 12504430011.

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

It is not a de Polignac number, because 11003440521 - 2⁵ = 11003440489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11003440523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2209705 + ... + 2214678.

It is an arithmetic number, because the mean of its divisors is an integer number (1836119360).

Almost surely, 2^11003440521 is an apocalyptic number.

It is an amenable number.

11003440521 is a deficient number, since it is larger than the sum of its proper divisors (3685514359).

11003440521 is an equidigital number, since it uses as much as digits as its factorization.

11003440521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4425215.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 11003440521 its reverse (12504430011), we get a palindrome (23507870532).

The spelling of 11003440521 in words is "eleven billion, three million, four hundred forty thousand, five hundred twenty-one".