21320032103 has 8 divisors (see below), whose sum is σ = 22198068816. Its totient is φ = 20459044800.

The previous prime is 21320032079. The next prime is 21320032177. The reversal of 21320032103 is 30123002312.

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 21320032103 - 2¹⁸ = 21319769959 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 (21320032193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4259801 + ... + 4264802.

It is an arithmetic number, because the mean of its divisors is an integer number (2774758602).

Almost surely, 2^21320032103 is an apocalyptic number.

21320032103 is a deficient number, since it is larger than the sum of its proper divisors (878036713).

21320032103 is an equidigital number, since it uses as much as digits as its factorization.

21320032103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8524705.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21320032103 its reverse (30123002312), we get a palindrome (51443034415).

The spelling of 21320032103 in words is "twenty-one billion, three hundred twenty million, thirty-two thousand, one hundred three".