33561222 has 8 divisors (see below), whose sum is σ = 67122456. Its totient is φ = 11187072.

The previous prime is 33561197. The next prime is 33561263. The reversal of 33561222 is 22216533.

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

33561222 is an admirable number.

It is a super-2 number, since 2×33561222² = 2252711244266568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33561192 and 33561201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2796763 + ... + 2796774.

It is an arithmetic number, because the mean of its divisors is an integer number (8390307).

Almost surely, 2^33561222 is an apocalyptic number.

33561222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

33561222 is a wasteful number, since it uses less digits than its factorization.

33561222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5593542.

The product of its digits is 2160, while the sum is 24.

The square root of 33561222 is about 5793.2048125368. The cubic root of 33561222 is about 322.5615434498.

Adding to 33561222 its reverse (22216533), we get a palindrome (55777755).

The spelling of 33561222 in words is "thirty-three million, five hundred sixty-one thousand, two hundred twenty-two".