21322322303 has 4 divisors (see below), whose sum is σ = 21324685080. Its totient is φ = 21319959528.

The previous prime is 21322322299. The next prime is 21322322309. The reversal of 21322322303 is 30322322312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21322322303 - 2² = 21322322299 is a prime.

It is a super-2 number, since 2×21322322303² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21322322309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1167800 + ... + 1185917.

It is an arithmetic number, because the mean of its divisors is an integer number (5331171270).

Almost surely, 2^21322322303 is an apocalyptic number.

21322322303 is a deficient number, since it is larger than the sum of its proper divisors (2362777).

21322322303 is an equidigital number, since it uses as much as digits as its factorization.

21322322303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2362776.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 21322322303 its reverse (30322322312), we get a palindrome (51644644615).

Subtracting 21322322303 from its reverse (30322322312), we obtain a palindrome (9000000009).

The spelling of 21322322303 in words is "twenty-one billion, three hundred twenty-two million, three hundred twenty-two thousand, three hundred three".