21211003022321 has 8 divisors (see below), whose sum is σ = 24294190398720. Its totient is φ = 18141076667808.

The previous prime is 21211003022317. The next prime is 21211003022351. The reversal of 21211003022321 is 12322030011212.

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 21211003022321 - 2² = 21211003022317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21211003022293 and 21211003022302.

It is not an unprimeable number, because it can be changed into a prime (21211003022351) 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, 3315252041 + ... + 3315258438.

It is an arithmetic number, because the mean of its divisors is an integer number (3036773799840).

Almost surely, 2^{21211003022321} is an apocalyptic number.

It is an amenable number.

21211003022321 is a deficient number, since it is larger than the sum of its proper divisors (3083187376399).

21211003022321 is an equidigital number, since it uses as much as digits as its factorization.

21211003022321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6630510943.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21211003022321 its reverse (12322030011212), we get a palindrome (33533033033533).

The spelling of 21211003022321 in words is "twenty-one trillion, two hundred eleven billion, three million, twenty-two thousand, three hundred twenty-one".