21334033 has 8 divisors (see below), whose sum is σ = 24413120. Its totient is φ = 18262800.

The previous prime is 21334007. The next prime is 21334039. The reversal of 21334033 is 33043312.

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 21334033 - 2²¹ = 19236881 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21334033.

It is not an unprimeable number, because it can be changed into a prime (21334039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6058 + ... + 8908.

It is an arithmetic number, because the mean of its divisors is an integer number (3051640).

Almost surely, 2^21334033 is an apocalyptic number.

It is an amenable number.

21334033 is a deficient number, since it is larger than the sum of its proper divisors (3079087).

21334033 is a wasteful number, since it uses less digits than its factorization.

21334033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3927.

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 21334033 is about 4618.8778940344. The cubic root of 21334033 is about 277.3475417182.

Adding to 21334033 its reverse (33043312), we get a palindrome (54377345).

The spelling of 21334033 in words is "twenty-one million, three hundred thirty-four thousand, thirty-three".