33221242 has 8 divisors (see below), whose sum is σ = 49856436. Its totient is φ = 16602432.

The previous prime is 33221197. The next prime is 33221249. The reversal of 33221242 is 24212233.

It can be written as a sum of positive squares in 2 ways, for example, as 32729841 + 491401 = 5721^2 + 701^2 .

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

It is a super-2 number, since 2×33221242² = 2207301840045128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33221249) 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 3 ways as a sum of consecutive naturals, for example, 5148 + ... + 9640.

Almost surely, 2^33221242 is an apocalyptic number.

33221242 is a deficient number, since it is larger than the sum of its proper divisors (16635194).

33221242 is a wasteful number, since it uses less digits than its factorization.

33221242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8192.

The product of its digits is 576, while the sum is 19.

The square root of 33221242 is about 5763.7871230641. The cubic root of 33221242 is about 321.4686464413.

Adding to 33221242 its reverse (24212233), we get a palindrome (57433475).

Subtracting from 33221242 its reverse (24212233), we obtain a palindrome (9009009).

The spelling of 33221242 in words is "thirty-three million, two hundred twenty-one thousand, two hundred forty-two".