21321110010311 has 8 divisors (see below), whose sum is σ = 23556827428704. Its totient is φ = 19194451978240.

The previous prime is 21321110010289. The next prime is 21321110010313. The reversal of 21321110010311 is 11301001112312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21321110010311 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21321110010311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21321110010313) 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, 27264846170 + ... + 27264846951.

It is an arithmetic number, because the mean of its divisors is an integer number (2944603428588).

Almost surely, 2^{21321110010311} is an apocalyptic number.

21321110010311 is a deficient number, since it is larger than the sum of its proper divisors (2235717418393).

21321110010311 is a wasteful number, since it uses less digits than its factorization.

21321110010311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54529693161.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 21321110010311 its reverse (11301001112312), we get a palindrome (32622111122623).

The spelling of 21321110010311 in words is "twenty-one trillion, three hundred twenty-one billion, one hundred ten million, ten thousand, three hundred eleven".