1120001003 has 4 divisors (see below), whose sum is σ = 1221819288. Its totient is φ = 1018182720.

The previous prime is 1120000991. The next prime is 1120001033. The reversal of 1120001003 is 3001000211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3001000211 = 11 ⋅272818201.

It is a cyclic number.

It is not a de Polignac number, because 1120001003 - 2¹⁸ = 1119738859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1120001033) 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 3 ways as a sum of consecutive naturals, for example, 50909126 + ... + 50909147.

It is an arithmetic number, because the mean of its divisors is an integer number (305454822).

Almost surely, 2^1120001003 is an apocalyptic number.

1120001003 is a deficient number, since it is larger than the sum of its proper divisors (101818285).

1120001003 is a wasteful number, since it uses less digits than its factorization.

1120001003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101818284.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 1120001003 is about 33466.4160465384. The cubic root of 1120001003 is about 1038.4991303744.

Adding to 1120001003 its reverse (3001000211), we get a palindrome (4121001214).

The spelling of 1120001003 in words is "one billion, one hundred twenty million, one thousand, three".