21333223323 has 12 divisors (see below), whose sum is σ = 31049884008. Its totient is φ = 14113582080.

The previous prime is 21333223309. The next prime is 21333223349. The reversal of 21333223323 is 32332233312.

21333223323 is a `hidden beast` number, since 2 + 1 + 3 + 3 + 322 + 332 + 3 = 666.

It is not a de Polignac number, because 21333223323 - 2¹⁰ = 21333222299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21333223393) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9045990 + ... + 9048347.

It is an arithmetic number, because the mean of its divisors is an integer number (2587490334).

Almost surely, 2^21333223323 is an apocalyptic number.

21333223323 is a deficient number, since it is larger than the sum of its proper divisors (9716660685).

21333223323 is a wasteful number, since it uses less digits than its factorization.

21333223323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18094474 (or 18094471 counting only the distinct ones).

The product of its digits is 11664, while the sum is 27.

Adding to 21333223323 its reverse (32332233312), we get a palindrome (53665456635).

The spelling of 21333223323 in words is "twenty-one billion, three hundred thirty-three million, two hundred twenty-three thousand, three hundred twenty-three".