21333213221333 has 8 divisors (see below), whose sum is σ = 23004821150976. Its totient is φ = 19665975510000.

The previous prime is 21333213221297. The next prime is 21333213221339. The reversal of 21333213221333 is 33312231233312.

It is a happy number.

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 21333213221333 - 2⁶ = 21333213221269 is a prime.

It is a super-2 number, since 2×21333213221333² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21333213221333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21333213221339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1092544433 + ... + 1092563958.

It is an arithmetic number, because the mean of its divisors is an integer number (2875602643872).

Almost surely, 2^{21333213221333} is an apocalyptic number.

It is an amenable number.

21333213221333 is a deficient number, since it is larger than the sum of its proper divisors (1671607929643).

21333213221333 is a wasteful number, since it uses less digits than its factorization.

21333213221333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2185109155.

The product of its digits is 34992, while the sum is 32.

Adding to 21333213221333 its reverse (33312231233312), we get a palindrome (54645444454645).

The spelling of 21333213221333 in words is "twenty-one trillion, three hundred thirty-three billion, two hundred thirteen million, two hundred twenty-one thousand, three hundred thirty-three".