33221104 has 40 divisors (see below), whose sum is σ = 75138048. Its totient is φ = 13932480.

The previous prime is 33221093. The next prime is 33221137. The reversal of 33221104 is 40112233.

It is a happy number.

It is a super-2 number, since 2×33221104² = 2207283501957632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2109 + ... + 8419.

Almost surely, 2^33221104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33221104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37569024).

33221104 is an abundant number, since it is smaller than the sum of its proper divisors (41916944).

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

33221104 is a wasteful number, since it uses less digits than its factorization.

33221104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6373 (or 6367 counting only the distinct ones).

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

The square root of 33221104 is about 5763.7751517560. The cubic root of 33221104 is about 321.4682013171.

Adding to 33221104 its reverse (40112233), we get a palindrome (73333337).

The spelling of 33221104 in words is "thirty-three million, two hundred twenty-one thousand, one hundred four".