21202320103 has 8 divisors (see below), whose sum is σ = 21368858000. Its totient is φ = 21035982528.

The previous prime is 21202320101. The next prime is 21202320109. The reversal of 21202320103 is 30102320212.

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

It is a cyclic number.

It is not a de Polignac number, because 21202320103 - 2¹ = 21202320101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202320101) 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, 166075 + ... + 264547.

It is an arithmetic number, because the mean of its divisors is an integer number (2671107250).

Almost surely, 2^21202320103 is an apocalyptic number.

21202320103 is a deficient number, since it is larger than the sum of its proper divisors (166537897).

21202320103 is a wasteful number, since it uses less digits than its factorization.

21202320103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100161.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21202320103 its reverse (30102320212), we get a palindrome (51304640315).

The spelling of 21202320103 in words is "twenty-one billion, two hundred two million, three hundred twenty thousand, one hundred three".