21322301321 has 8 divisors (see below), whose sum is σ = 21450078720. Its totient is φ = 21194871808.

The previous prime is 21322301311. The next prime is 21322301327. The reversal of 21322301321 is 12310322312.

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 21322301321 - 2¹⁰ = 21322300297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21322301293 and 21322301302.

It is not an unprimeable number, because it can be changed into a prime (21322301327) 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, 36500 + ... + 209706.

It is an arithmetic number, because the mean of its divisors is an integer number (2681259840).

Almost surely, 2^21322301321 is an apocalyptic number.

It is an amenable number.

21322301321 is a deficient number, since it is larger than the sum of its proper divisors (127777399).

21322301321 is a wasteful number, since it uses less digits than its factorization.

21322301321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173943.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21322301321 its reverse (12310322312), we get a palindrome (33632623633).

The spelling of 21322301321 in words is "twenty-one billion, three hundred twenty-two million, three hundred one thousand, three hundred twenty-one".