21233223333 has 32 divisors (see below), whose sum is σ = 35960305920. Its totient is φ = 12129937920.

The previous prime is 21233223331. The next prime is 21233223373. The reversal of 21233223333 is 33332233212.

21233223333 is a `hidden beast` number, since 2 + 1 + 2 + 3 + 322 + 3 + 333 = 666.

It is not a de Polignac number, because 21233223333 - 2¹ = 21233223331 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 21233223297 and 21233223306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21233223331) 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 31 ways as a sum of consecutive naturals, for example, 783693 + ... + 810333.

It is an arithmetic number, because the mean of its divisors is an integer number (1123759560).

Almost surely, 2^21233223333 is an apocalyptic number.

It is an amenable number.

21233223333 is a deficient number, since it is larger than the sum of its proper divisors (14727082587).

21233223333 is a wasteful number, since it uses less digits than its factorization.

21233223333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30874 (or 30868 counting only the distinct ones).

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

Adding to 21233223333 its reverse (33332233212), we get a palindrome (54565456545).

The spelling of 21233223333 in words is "twenty-one billion, two hundred thirty-three million, two hundred twenty-three thousand, three hundred thirty-three".