11011002003 has 32 divisors (see below), whose sum is σ = 16993433600. Its totient is φ = 7038640800.

The previous prime is 11011001957. The next prime is 11011002019. The reversal of 11011002003 is 30020011011.

It is not a de Polignac number, because 11011002003 - 2⁸ = 11011001747 is a prime.

It is a super-2 number, since 2×11011002003² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11011002043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30888 + ... + 151578.

It is an arithmetic number, because the mean of its divisors is an integer number (531044800).

Almost surely, 2^11011002003 is an apocalyptic number.

11011002003 is a deficient number, since it is larger than the sum of its proper divisors (5982431597).

11011002003 is a wasteful number, since it uses less digits than its factorization.

11011002003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120840 (or 120834 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

Adding to 11011002003 its reverse (30020011011), we get a palindrome (41031013014).

The spelling of 11011002003 in words is "eleven billion, eleven million, two thousand, three".