1001112003 has 12 divisors (see below), whose sum is σ = 1450222488. Its totient is φ = 665482560.

The previous prime is 1001112001. The next prime is 1001112017. The reversal of 1001112003 is 3002111001.

It is not a de Polignac number, because 1001112003 - 2¹ = 1001112001 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (1001112001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 157158 + ... + 163403.

It is an arithmetic number, because the mean of its divisors is an integer number (120851874).

Almost surely, 2^1001112003 is an apocalyptic number.

1001112003 is a deficient number, since it is larger than the sum of its proper divisors (449110485).

1001112003 is a wasteful number, since it uses less digits than its factorization.

1001112003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320914 (or 320911 counting only the distinct ones).

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

The square root of 1001112003 is about 31640.3540277286. The cubic root of 1001112003 is about 1000.3705303570.

Adding to 1001112003 its reverse (3002111001), we get a palindrome (4003223004).

The spelling of 1001112003 in words is "one billion, one million, one hundred twelve thousand, three".