13001021003 has 4 divisors (see below), whose sum is σ = 13002017880. Its totient is φ = 13000024128.

The previous prime is 13001020973. The next prime is 13001021021. The reversal of 13001021003 is 30012010031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30012010031 = 22259 ⋅1348309.

It is a cyclic number.

It is not a de Polignac number, because 13001021003 - 2⁶ = 13001020939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13001021023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 478613 + ... + 505046.

It is an arithmetic number, because the mean of its divisors is an integer number (3250504470).

Almost surely, 2^13001021003 is an apocalyptic number.

13001021003 is a deficient number, since it is larger than the sum of its proper divisors (996877).

13001021003 is an equidigital number, since it uses as much as digits as its factorization.

13001021003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996876.

The product of its (nonzero) digits is 18, while the sum is 11.

Adding to 13001021003 its reverse (30012010031), we get a palindrome (43013031034).

The spelling of 13001021003 in words is "thirteen billion, one million, twenty-one thousand, three".