33216812243 has 4 divisors (see below), whose sum is σ = 33218057280. Its totient is φ = 33215567208.

The previous prime is 33216812207. The next prime is 33216812249. The reversal of 33216812243 is 34221861233.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 33216812243 - 2¹⁸ = 33216550099 is a prime.

It is a super-3 number, since 3×33216812243³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33216812249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 581603 + ... + 636156.

It is an arithmetic number, because the mean of its divisors is an integer number (8304514320).

Almost surely, 2^33216812243 is an apocalyptic number.

33216812243 is a deficient number, since it is larger than the sum of its proper divisors (1245037).

33216812243 is a wasteful number, since it uses less digits than its factorization.

33216812243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245036.

The product of its digits is 41472, while the sum is 35.

The spelling of 33216812243 in words is "thirty-three billion, two hundred sixteen million, eight hundred twelve thousand, two hundred forty-three".