11003321023 has 4 divisors (see below), whose sum is σ = 11020018680. Its totient is φ = 10986623368.

The previous prime is 11003320973. The next prime is 11003321029. The reversal of 11003321023 is 32012330011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11003321023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11003320988 and 11003321006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11003321029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8347840 + ... + 8349157.

It is an arithmetic number, because the mean of its divisors is an integer number (2755004670).

Almost surely, 2^11003321023 is an apocalyptic number.

11003321023 is a deficient number, since it is larger than the sum of its proper divisors (16697657).

11003321023 is an equidigital number, since it uses as much as digits as its factorization.

11003321023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16697656.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 11003321023 its reverse (32012330011), we get a palindrome (43015651034).

The spelling of 11003321023 in words is "eleven billion, three million, three hundred twenty-one thousand, twenty-three".