21202321003003 has 8 divisors (see below), whose sum is σ = 25506551582720. Its totient is φ = 17216922318120.

The previous prime is 21202321002997. The next prime is 21202321003021. The reversal of 21202321003003 is 30030012320212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21202321003003 - 2³⁷ = 21064882049531 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21202325003003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79707973563 + ... + 79707973828.

It is an arithmetic number, because the mean of its divisors is an integer number (3188318947840).

Almost surely, 2^{21202321003003} is an apocalyptic number.

21202321003003 is a deficient number, since it is larger than the sum of its proper divisors (4304230579717).

21202321003003 is a wasteful number, since it uses less digits than its factorization.

21202321003003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159415947417.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21202321003003 its reverse (30030012320212), we get a palindrome (51232333323215).

The spelling of 21202321003003 in words is "twenty-one trillion, two hundred two billion, three hundred twenty-one million, three thousand, three".