21012333323 has 8 divisors (see below), whose sum is σ = 21206051280. Its totient is φ = 20819463840.

The previous prime is 21012333311. The next prime is 21012333361. The reversal of 21012333323 is 32333321012.

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 21012333323 - 2³⁰ = 19938591499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21012339323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162308 + ... + 261473.

It is an arithmetic number, because the mean of its divisors is an integer number (2650756410).

Almost surely, 2^21012333323 is an apocalyptic number.

21012333323 is a deficient number, since it is larger than the sum of its proper divisors (193717957).

21012333323 is a wasteful number, since it uses less digits than its factorization.

21012333323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424237.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 21012333323 its reverse (32333321012), we get a palindrome (53345654335).

The spelling of 21012333323 in words is "twenty-one billion, twelve million, three hundred thirty-three thousand, three hundred twenty-three".