33836221 has 8 divisors (see below), whose sum is σ = 35270144. Its totient is φ = 32423760.

The previous prime is 33836213. The next prime is 33836233. The reversal of 33836221 is 12263833.

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

It is a cyclic number.

It is not a de Polignac number, because 33836221 - 2³ = 33836213 is a prime.

It is a super-2 number, since 2×33836221² = 2289779703121682, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33836221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33836281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2106 + ... + 8491.

It is an arithmetic number, because the mean of its divisors is an integer number (4408768).

Almost surely, 2^33836221 is an apocalyptic number.

33836221 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

33836221 is a deficient number, since it is larger than the sum of its proper divisors (1433923).

33836221 is a wasteful number, since it uses less digits than its factorization.

33836221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10731.

The product of its digits is 5184, while the sum is 28.

The square root of 33836221 is about 5816.8910080901. The cubic root of 33836221 is about 323.4401658053.

It can be divided in two parts, 3383 and 6221, that added together give a square (9604 = 98²).

The spelling of 33836221 in words is "thirty-three million, eight hundred thirty-six thousand, two hundred twenty-one".