33221442 has 8 divisors (see below), whose sum is σ = 66442896. Its totient is φ = 11073812.

The previous prime is 33221431. The next prime is 33221459. The reversal of 33221442 is 24412233.

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

33221442 is an admirable number.

It is a super-2 number, since 2×33221442² = 2207328417118728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2768448 + ... + 2768459.

It is an arithmetic number, because the mean of its divisors is an integer number (8305362).

Almost surely, 2^33221442 is an apocalyptic number.

33221442 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.

33221442 is a wasteful number, since it uses less digits than its factorization.

33221442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5536912.

The product of its digits is 1152, while the sum is 21.

The square root of 33221442 is about 5763.8044727419. The cubic root of 33221442 is about 321.4692915466.

Adding to 33221442 its reverse (24412233), we get a palindrome (57633675).

The spelling of 33221442 in words is "thirty-three million, two hundred twenty-one thousand, four hundred forty-two".