21133323332 has 24 divisors (see below), whose sum is σ = 40422621792. Its totient is φ = 9587678400.

The previous prime is 21133323331. The next prime is 21133323359. The reversal of 21133323332 is 23332333112.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21133323331) 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, 436169 + ... + 482192.

It is an arithmetic number, because the mean of its divisors is an integer number (1684275908).

Almost surely, 2^21133323332 is an apocalyptic number.

21133323332 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21133323332 is a deficient number, since it is larger than the sum of its proper divisors (19289298460).

21133323332 is a wasteful number, since it uses less digits than its factorization.

21133323332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918899 (or 918897 counting only the distinct ones).

The product of its digits is 5832, while the sum is 26.

Adding to 21133323332 its reverse (23332333112), we get a palindrome (44465656444).

The spelling of 21133323332 in words is "twenty-one billion, one hundred thirty-three million, three hundred twenty-three thousand, three hundred thirty-two".