21021232333 has 8 divisors (see below), whose sum is σ = 21187146240. Its totient is φ = 20855968560.

The previous prime is 21021232319. The next prime is 21021232409. The reversal of 21021232333 is 33323212012.

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 21021232333 - 2⁵ = 21021232301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21021230333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97510 + ... + 227047.

It is an arithmetic number, because the mean of its divisors is an integer number (2648393280).

Almost surely, 2^21021232333 is an apocalyptic number.

It is an amenable number.

21021232333 is a deficient number, since it is larger than the sum of its proper divisors (165913907).

21021232333 is a wasteful number, since it uses less digits than its factorization.

21021232333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325067.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21021232333 its reverse (33323212012), we get a palindrome (54344444345).

The spelling of 21021232333 in words is "twenty-one billion, twenty-one million, two hundred thirty-two thousand, three hundred thirty-three".