11100001003 has 16 divisors (see below), whose sum is σ = 13664385280. Its totient is φ = 8780589216.

The previous prime is 11100000983. The next prime is 11100001027. The reversal of 11100001003 is 30010000111.

It is a happy number.

It is not a de Polignac number, because 11100001003 - 2¹⁷ = 11099869931 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is not an unprimeable number, because it can be changed into a prime (11100001603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 575368 + ... + 594346.

It is an arithmetic number, because the mean of its divisors is an integer number (854024080).

Almost surely, 2^11100001003 is an apocalyptic number.

11100001003 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11100001003 is a deficient number, since it is larger than the sum of its proper divisors (2564384277).

11100001003 is a wasteful number, since it uses less digits than its factorization.

11100001003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25426.

The product of its (nonzero) digits is 3, while the sum is 7.

Adding to 11100001003 its reverse (30010000111), we get a palindrome (41110001114).

The spelling of 11100001003 in words is "eleven billion, one hundred million, one thousand, three".