33233033221 has 4 divisors (see below), whose sum is σ = 33234182944. Its totient is φ = 33231883500.

The previous prime is 33233033189. The next prime is 33233033231. The reversal of 33233033221 is 12233033233.

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 33233033221 - 2⁵ = 33233033189 is a prime.

It is a super-2 number, since 2×33233033221² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33233033231) 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, 530355 + ... + 589696.

It is an arithmetic number, because the mean of its divisors is an integer number (8308545736).

Almost surely, 2^33233033221 is an apocalyptic number.

It is an amenable number.

33233033221 is a deficient number, since it is larger than the sum of its proper divisors (1149723).

33233033221 is a wasteful number, since it uses less digits than its factorization.

33233033221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149722.

The product of its (nonzero) digits is 5832, while the sum is 25.

Adding to 33233033221 its reverse (12233033233), we get a palindrome (45466066454).

The spelling of 33233033221 in words is "thirty-three billion, two hundred thirty-three million, thirty-three thousand, two hundred twenty-one".