21331230333 has 8 divisors (see below), whose sum is σ = 32504731968. Its totient is φ = 12189274464.

The previous prime is 21331230311. The next prime is 21331230341. The reversal of 21331230333 is 33303213312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21331230333 - 2⁸ = 21331230077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21331230533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 507886416 + ... + 507886457.

It is an arithmetic number, because the mean of its divisors is an integer number (4063091496).

Almost surely, 2^21331230333 is an apocalyptic number.

It is an amenable number.

21331230333 is a deficient number, since it is larger than the sum of its proper divisors (11173501635).

21331230333 is a wasteful number, since it uses less digits than its factorization.

21331230333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015772883.

The product of its (nonzero) digits is 2916, while the sum is 24.

Adding to 21331230333 its reverse (33303213312), we get a palindrome (54634443645).

The spelling of 21331230333 in words is "twenty-one billion, three hundred thirty-one million, two hundred thirty thousand, three hundred thirty-three".