33122221 has 8 divisors (see below), whose sum is σ = 36454464. Its totient is φ = 29843520.

The previous prime is 33122209. The next prime is 33122227. The reversal of 33122221 is 12222133.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 33122221 - 2⁵ = 33122189 is a prime.

It is a super-3 number, since 3×33122221³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33122195 and 33122204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33122227) 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 7 ways as a sum of consecutive naturals, for example, 12081 + ... + 14566.

It is an arithmetic number, because the mean of its divisors is an integer number (4556808).

Almost surely, 2^33122221 is an apocalyptic number.

It is an amenable number.

33122221 is a deficient number, since it is larger than the sum of its proper divisors (3332243).

33122221 is a wasteful number, since it uses less digits than its factorization.

33122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26771.

The product of its digits is 144, while the sum is 16.

The square root of 33122221 is about 5755.1907874544. The cubic root of 33122221 is about 321.1489330666.

Adding to 33122221 its reverse (12222133), we get a palindrome (45344354).

The spelling of 33122221 in words is "thirty-three million, one hundred twenty-two thousand, two hundred twenty-one".