21233111333 has 8 divisors (see below), whose sum is σ = 25693849152. Its totient is φ = 17129232576.

The previous prime is 21233111311. The next prime is 21233111359. The reversal of 21233111333 is 33311133212.

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 21233111333 - 2⁶ = 21233111269 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21233111299 and 21233111308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21233111533) 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, 89214635 + ... + 89214872.

It is an arithmetic number, because the mean of its divisors is an integer number (3211731144).

Almost surely, 2^21233111333 is an apocalyptic number.

It is an amenable number.

21233111333 is a deficient number, since it is larger than the sum of its proper divisors (4460737819).

21233111333 is a wasteful number, since it uses less digits than its factorization.

21233111333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178429531.

The product of its digits is 972, while the sum is 23.

Adding to 21233111333 its reverse (33311133212), we get a palindrome (54544244545).

The spelling of 21233111333 in words is "twenty-one billion, two hundred thirty-three million, one hundred eleven thousand, three hundred thirty-three".