33221056 has 28 divisors (see below), whose sum is σ = 71917560. Its totient is φ = 15100160.

The previous prime is 33221051. The next prime is 33221081. The reversal of 33221056 is 65012233.

It is a super-2 number, since 2×33221056² = 2207277123510272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33221051) 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, 22891 + ... + 24298.

Almost surely, 2^33221056 is an apocalyptic number.

It is an amenable number.

33221056 is an abundant number, since it is smaller than the sum of its proper divisors (38696504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33221056 is a wasteful number, since it uses less digits than its factorization.

33221056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47212 (or 47202 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 33221056 is about 5763.7709878169. The cubic root of 33221056 is about 321.4680464910.

Adding to 33221056 its reverse (65012233), we get a palindrome (98233289).

The spelling of 33221056 in words is "thirty-three million, two hundred twenty-one thousand, fifty-six".