21302210311321 has 8 divisors (see below), whose sum is σ = 21439017008640. Its totient is φ = 21165841396368.

The previous prime is 21302210311241. The next prime is 21302210311339. The reversal of 21302210311321 is 12311301220312.

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 21302210311321 - 2²⁷ = 21302076093593 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21302210311292 and 21302210311301.

It is not an unprimeable number, because it can be changed into a prime (21302210011321) 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, 109347961 + ... + 109542598.

It is an arithmetic number, because the mean of its divisors is an integer number (2679877126080).

Almost surely, 2^{21302210311321} is an apocalyptic number.

It is an amenable number.

21302210311321 is a deficient number, since it is larger than the sum of its proper divisors (136806697319).

21302210311321 is a wasteful number, since it uses less digits than its factorization.

21302210311321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218891183.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 21302210311321 its reverse (12311301220312), we get a palindrome (33613511531633).

The spelling of 21302210311321 in words is "twenty-one trillion, three hundred two billion, two hundred ten million, three hundred eleven thousand, three hundred twenty-one".