21223321311330 has 48 divisors (see below), whose sum is σ = 55306331720640. Its totient is φ = 5646660420384.

The previous prime is 21223321311329. The next prime is 21223321311343. The reversal of 21223321311330 is 3311312332212.

21223321311330 is a `hidden beast` number, since 2 + 1 + 2 + 2 + 3 + 321 + 3 + 1 + 1 + 330 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 21223321311294 and 21223321311303.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 268542132 + ... + 268621151.

It is an arithmetic number, because the mean of its divisors is an integer number (1152215244180).

Almost surely, 2^{21223321311330} is an apocalyptic number.

21223321311330 is an abundant number, since it is smaller than the sum of its proper divisors (34083010409310).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21223321311330 is a wasteful number, since it uses less digits than its factorization.

21223321311330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537163735 (or 537163732 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 21223321311330 its reverse (3311312332212), we get a palindrome (24534633643542).

The spelling of 21223321311330 in words is "twenty-one trillion, two hundred twenty-three billion, three hundred twenty-one million, three hundred eleven thousand, three hundred thirty".