1003103220021 has 16 divisors (see below), whose sum is σ = 1528558028928. Its totient is φ = 573194419200.

The previous prime is 1003103220011. The next prime is 1003103220029. The reversal of 1003103220021 is 1200223013001.

It is not a de Polignac number, because 1003103220021 - 2¹⁵ = 1003103187253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003103220029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1636141 + ... + 2164061.

It is an arithmetic number, because the mean of its divisors is an integer number (95534876808).

Almost surely, 2^{1003103220021} is an apocalyptic number.

It is an amenable number.

1003103220021 is a deficient number, since it is larger than the sum of its proper divisors (525454808907).

1003103220021 is an equidigital number, since it uses as much as digits as its factorization.

1003103220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618412.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 1003103220021 its reverse (1200223013001), we get a palindrome (2203326233022).

The spelling of 1003103220021 in words is "one trillion, three billion, one hundred three million, two hundred twenty thousand, twenty-one".