21022323203 has 8 divisors (see below), whose sum is σ = 24329633280. Its totient is φ = 17791043400.

The previous prime is 21022323193. The next prime is 21022323239. The reversal of 21022323203 is 30232322012.

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 21022323203 - 2⁸ = 21022322947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21022323293) 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, 19006973 + ... + 19008078.

It is an arithmetic number, because the mean of its divisors is an integer number (3041204160).

Almost surely, 2^21022323203 is an apocalyptic number.

21022323203 is a deficient number, since it is larger than the sum of its proper divisors (3307310077).

21022323203 is an equidigital number, since it uses as much as digits as its factorization.

21022323203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38015137.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 21022323203 its reverse (30232322012), we get a palindrome (51254645215).

The spelling of 21022323203 in words is "twenty-one billion, twenty-two million, three hundred twenty-three thousand, two hundred three".