11001003000 has 256 divisors, whose sum is σ = 37123107840. Its totient is φ = 2696256000.

The previous prime is 11001002993. The next prime is 11001003011. The reversal of 11001003000 is 30010011.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a self number, because there is not a number n which added to its sum of digits gives 11001003000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12128547 + ... + 12129453.

It is an arithmetic number, because the mean of its divisors is an integer number (145012140).

Almost surely, 2^11001003000 is an apocalyptic number.

11001003000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11001003000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18561553920).

11001003000 is an abundant number, since it is smaller than the sum of its proper divisors (26122104840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11001003000 is a wasteful number, since it uses less digits than its factorization.

11001003000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1255 (or 1241 counting only the distinct ones).

The product of its (nonzero) digits is 3, while the sum is 6.

Adding to 11001003000 its reverse (30010011), we get a palindrome (11031013011).

The spelling of 11001003000 in words is "eleven billion, one million, three thousand".