21333333011323 has 4 divisors (see below), whose sum is σ = 21333342807568. Its totient is φ = 21333323215080.

The previous prime is 21333333011213. The next prime is 21333333011327. The reversal of 21333333011323 is 32311033333312.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 21333333011323 - 2³⁷ = 21195894057851 is a prime.

It is a super-2 number, since 2×21333333011323² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21333333011327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3433 + ... + 6531973.

It is an arithmetic number, because the mean of its divisors is an integer number (5333335701892).

Almost surely, 2^{21333333011323} is an apocalyptic number.

21333333011323 is a deficient number, since it is larger than the sum of its proper divisors (9796245).

21333333011323 is an equidigital number, since it uses as much as digits as its factorization.

21333333011323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9796244.

The product of its (nonzero) digits is 26244, while the sum is 31.

Adding to 21333333011323 its reverse (32311033333312), we get a palindrome (53644366344635).

The spelling of 21333333011323 in words is "twenty-one trillion, three hundred thirty-three billion, three hundred thirty-three million, eleven thousand, three hundred twenty-three".