21313302320321 has 8 divisors (see below), whose sum is σ = 23251442693088. Its totient is φ = 19375256520000.

The previous prime is 21313302320293. The next prime is 21313302320329. The reversal of 21313302320321 is 12302320331312.

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 21313302320321 - 2²² = 21313298126017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21313302320329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23171480 + ... + 24073721.

It is an arithmetic number, because the mean of its divisors is an integer number (2906430336636).

Almost surely, 2^{21313302320321} is an apocalyptic number.

It is an amenable number.

21313302320321 is a deficient number, since it is larger than the sum of its proper divisors (1938140372767).

21313302320321 is a wasteful number, since it uses less digits than its factorization.

21313302320321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47286223.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 21313302320321 its reverse (12302320331312), we get a palindrome (33615622651633).

The spelling of 21313302320321 in words is "twenty-one trillion, three hundred thirteen billion, three hundred two million, three hundred twenty thousand, three hundred twenty-one".