21322330321 has 8 divisors (see below), whose sum is σ = 21836882144. Its totient is φ = 20808627840.

The previous prime is 21322330303. The next prime is 21322330349. The reversal of 21322330321 is 12303322312.

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 21322330321 - 2²¹ = 21320233169 is a prime.

It is a super-3 number, since 3×21322330321³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21322330292 and 21322330301.

It is not an unprimeable number, because it can be changed into a prime (21322330361) 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, 161376 + ... + 262081.

It is an arithmetic number, because the mean of its divisors is an integer number (2729610268).

Almost surely, 2^21322330321 is an apocalyptic number.

It is an amenable number.

21322330321 is a deficient number, since it is larger than the sum of its proper divisors (514551823).

21322330321 is a wasteful number, since it uses less digits than its factorization.

21322330321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424671.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21322330321 its reverse (12303322312), we get a palindrome (33625652633).

The spelling of 21322330321 in words is "twenty-one billion, three hundred twenty-two million, three hundred thirty thousand, three hundred twenty-one".