33233333221 has 4 divisors (see below), whose sum is σ = 36254545344. Its totient is φ = 30212121100.

The previous prime is 33233333183. The next prime is 33233333267. The reversal of 33233333221 is 12233333233.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 33233333221 - 2¹³ = 33233325029 is a prime.

It is a super-2 number, since 2×33233333221² (a number of 22 digits) contains 22 as substring.

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 33233333221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33233333291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1510606045 + ... + 1510606066.

It is an arithmetic number, because the mean of its divisors is an integer number (9063636336).

Almost surely, 2^33233333221 is an apocalyptic number.

It is an amenable number.

33233333221 is a deficient number, since it is larger than the sum of its proper divisors (3021212123).

33233333221 is a wasteful number, since it uses less digits than its factorization.

33233333221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3021212122.

The product of its digits is 17496, while the sum is 28.

Adding to 33233333221 its reverse (12233333233), we get a palindrome (45466666454).

The spelling of 33233333221 in words is "thirty-three billion, two hundred thirty-three million, three hundred thirty-three thousand, two hundred twenty-one".