21332033234021 has 8 divisors (see below), whose sum is σ = 22260350496384. Its totient is φ = 20403785768080.

The previous prime is 21332033233991. The next prime is 21332033234047. The reversal of 21332033234021 is 12043233023312.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21332033234021 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 (21332033234621) 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, 16824065 + ... + 18047526.

It is an arithmetic number, because the mean of its divisors is an integer number (2782543812048).

Almost surely, 2^{21332033234021} is an apocalyptic number.

It is an amenable number.

21332033234021 is a deficient number, since it is larger than the sum of its proper divisors (928317262363).

21332033234021 is a wasteful number, since it uses less digits than its factorization.

21332033234021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34898211.

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 21332033234021 its reverse (12043233023312), we get a palindrome (33375266257333).

The spelling of 21332033234021 in words is "twenty-one trillion, three hundred thirty-two billion, thirty-three million, two hundred thirty-four thousand, twenty-one".