1001013111003 has 4 divisors (see below), whose sum is σ = 1334684148008. Its totient is φ = 667342074000.

The previous prime is 1001013110957. The next prime is 1001013111019. The reversal of 1001013111003 is 3001113101001.

1001013111003 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1001013111003 - 2¹⁰ = 1001013109979 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1001013111003.

It is not an unprimeable number, because it can be changed into a prime (1001013111073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166835518498 + ... + 166835518503.

It is an arithmetic number, because the mean of its divisors is an integer number (333671037002).

Almost surely, 2^{1001013111003} is an apocalyptic number.

1001013111003 is a deficient number, since it is larger than the sum of its proper divisors (333671037005).

1001013111003 is an equidigital number, since it uses as much as digits as its factorization.

1001013111003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333671037004.

The product of its (nonzero) digits is 9, while the sum is 12.

Adding to 1001013111003 its reverse (3001113101001), we get a palindrome (4002126212004).

The spelling of 1001013111003 in words is "one trillion, one billion, thirteen million, one hundred eleven thousand, three".