21202110003 has 8 divisors (see below), whose sum is σ = 28354887616. Its totient is φ = 14092036200.

The previous prime is 21202109959. The next prime is 21202110019. The reversal of 21202110003 is 30001120212.

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

It is not a de Polignac number, because 21202110003 - 2⁶ = 21202109939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21202110043) 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, 10674793 + ... + 10676778.

It is an arithmetic number, because the mean of its divisors is an integer number (3544360952).

Almost surely, 2^21202110003 is an apocalyptic number.

21202110003 is a deficient number, since it is larger than the sum of its proper divisors (7152777613).

21202110003 is a wasteful number, since it uses less digits than its factorization.

21202110003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21351905.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 21202110003 its reverse (30001120212), we get a palindrome (51203230215).

The spelling of 21202110003 in words is "twenty-one billion, two hundred two million, one hundred ten thousand, three".