33221046 has 16 divisors (see below), whose sum is σ = 66561264. Its totient is φ = 11053824.

The previous prime is 33221011. The next prime is 33221047. The reversal of 33221046 is 64012233.

It is a happy number.

It is a super-2 number, since 2×33221046² = 2207275794668232, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33221047) 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, 1111 + ... + 8226.

It is an arithmetic number, because the mean of its divisors is an integer number (4160079).

Almost surely, 2^33221046 is an apocalyptic number.

33221046 is an abundant number, since it is smaller than the sum of its proper divisors (33340218).

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

33221046 is a wasteful number, since it uses less digits than its factorization.

33221046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9935.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 33221046 is about 5763.7701203292. The cubic root of 33221046 is about 321.4680142356.

Adding to 33221046 its reverse (64012233), we get a palindrome (97233279).

The spelling of 33221046 in words is "thirty-three million, two hundred twenty-one thousand, forty-six".