33221799 has 16 divisors (see below), whose sum is σ = 53004000. Its totient is φ = 20443968.

The previous prime is 33221777. The next prime is 33221807. The reversal of 33221799 is 99712233.

It is not a de Polignac number, because 33221799 - 2¹⁵ = 33189031 is a prime.

It is a super-2 number, since 2×33221799² = 2207375857592802, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33221399) 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 15 ways as a sum of consecutive naturals, for example, 46974 + ... + 47675.

It is an arithmetic number, because the mean of its divisors is an integer number (3312750).

Almost surely, 2^33221799 is an apocalyptic number.

33221799 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

33221799 is a deficient number, since it is larger than the sum of its proper divisors (19782201).

33221799 is a wasteful number, since it uses less digits than its factorization.

33221799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94671 (or 94665 counting only the distinct ones).

The product of its digits is 20412, while the sum is 36.

The square root of 33221799 is about 5763.8354417870. The cubic root of 33221799 is about 321.4704430532.

The spelling of 33221799 in words is "thirty-three million, two hundred twenty-one thousand, seven hundred ninety-nine".