33434204221 has 16 divisors (see below), whose sum is σ = 38647641600. Its totient is φ = 28604286000.

The previous prime is 33434204213. The next prime is 33434204231. The reversal of 33434204221 is 12240243433.

It is a cyclic number.

It is not a de Polignac number, because 33434204221 - 2³ = 33434204213 is a prime.

It is a super-2 number, since 2×33434204221² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33434204221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33434204201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 498151 + ... + 561268.

It is an arithmetic number, because the mean of its divisors is an integer number (2415477600).

Almost surely, 2^33434204221 is an apocalyptic number.

It is an amenable number.

33434204221 is a deficient number, since it is larger than the sum of its proper divisors (5213437379).

33434204221 is a wasteful number, since it uses less digits than its factorization.

33434204221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059600.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 33434204221 its reverse (12240243433), we get a palindrome (45674447654).

The spelling of 33434204221 in words is "thirty-three billion, four hundred thirty-four million, two hundred four thousand, two hundred twenty-one".