21322332321 has 32 divisors (see below), whose sum is σ = 30393522432. Its totient is φ = 13266190080.

The previous prime is 21322332319. The next prime is 21322332337. The reversal of 21322332321 is 12323322312.

It is not a de Polignac number, because 21322332321 - 2¹ = 21322332319 is a prime.

It is a super-2 number, since 2×21322332321² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21322332291 and 21322332300.

It is not an unprimeable number, because it can be changed into a prime (21322332821) 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 31 ways as a sum of consecutive naturals, for example, 645811 + ... + 678023.

It is an arithmetic number, because the mean of its divisors is an integer number (949797576).

Almost surely, 2^21322332321 is an apocalyptic number.

It is an amenable number.

21322332321 is a deficient number, since it is larger than the sum of its proper divisors (9071190111).

21322332321 is a wasteful number, since it uses less digits than its factorization.

21322332321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32473.

The product of its digits is 2592, while the sum is 24.

Adding to 21322332321 its reverse (12323322312), we get a palindrome (33645654633).

The spelling of 21322332321 in words is "twenty-one billion, three hundred twenty-two million, three hundred thirty-two thousand, three hundred twenty-one".