33322221 has 12 divisors (see below), whose sum is σ = 48350848. Its totient is φ = 22113864.

The previous prime is 33322207. The next prime is 33322271. The reversal of 33322221 is 12222333.

It is a happy number.

It is not a de Polignac number, because 33322221 - 2⁹ = 33321709 is a prime.

It is a super-2 number, since 2×33322221² = 2220740824745682, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 33322194 and 33322203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33322271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6295 + ... + 10308.

Almost surely, 2^33322221 is an apocalyptic number.

It is an amenable number.

33322221 is a deficient number, since it is larger than the sum of its proper divisors (15028627).

33322221 is a wasteful number, since it uses less digits than its factorization.

33322221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16832 (or 16829 counting only the distinct ones).

The product of its digits is 432, while the sum is 18.

The square root of 33322221 is about 5772.5402553815. The cubic root of 33322221 is about 321.7940280942.

Adding to 33322221 its reverse (12222333), we get a palindrome (45544554).

The spelling of 33322221 in words is "thirty-three million, three hundred twenty-two thousand, two hundred twenty-one".