10021001003 has 4 divisors (see below), whose sum is σ = 10791847248. Its totient is φ = 9250154760.

The previous prime is 10021000991. The next prime is 10021001009. The reversal of 10021001003 is 30010012001.

10021001003 is digitally balanced in base 2, because in such base 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 a cyclic number.

It is not a de Polignac number, because 10021001003 - 2⁴ = 10021000987 is a prime.

It is a super-2 number, since 2×10021001003² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10021001009) 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, 385423103 + ... + 385423128.

It is an arithmetic number, because the mean of its divisors is an integer number (2697961812).

Almost surely, 2^10021001003 is an apocalyptic number.

10021001003 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

10021001003 is a deficient number, since it is larger than the sum of its proper divisors (770846245).

10021001003 is an equidigital number, since it uses as much as digits as its factorization.

10021001003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770846244.

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

Adding to 10021001003 its reverse (30010012001), we get a palindrome (40031013004).

The spelling of 10021001003 in words is "ten billion, twenty-one million, one thousand, three".