33221190 has 48 divisors (see below), whose sum is σ = 82361808. Its totient is φ = 8569728.

The previous prime is 33221171. The next prime is 33221191. The reversal of 33221190 is 9112233.

It is a happy number.

It is a super-2 number, since 2×33221190² = 2207294930032200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33221191) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 191944 + ... + 192116.

It is an arithmetic number, because the mean of its divisors is an integer number (1715871).

Almost surely, 2^33221190 is an apocalyptic number.

33221190 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 33221190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41180904).

33221190 is an abundant number, since it is smaller than the sum of its proper divisors (49140618).

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

33221190 is a wasteful number, since it uses less digits than its factorization.

33221190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 33221190 is about 5763.7826121394. The cubic root of 33221190 is about 321.4684787135.

It can be divided in two parts, 33221 and 190, that added together give a triangular number (33411 = T₂₅₈).

The spelling of 33221190 in words is "thirty-three million, two hundred twenty-one thousand, one hundred ninety".