2221184 has 64 divisors (see below), whose sum is σ = 5271360. Its totient is φ = 912384.

The previous prime is 2221183. The next prime is 2221187. The reversal of 2221184 is 4811222.

It is a happy number.

2221184 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (64).

It is a nude number because it is divisible by every one of its digits.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221183) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 33119 + ... + 33185.

It is an arithmetic number, because the mean of its divisors is an integer number (82365).

2^2221184 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2221184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2635680).

2221184 is an abundant number, since it is smaller than the sum of its proper divisors (3050176).

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

2221184 is an equidigital number, since it uses as much as digits as its factorization.

2221184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125 (or 113 counting only the distinct ones).

The product of its digits is 256, while the sum is 20.

The square root of 2221184 is about 1490.3637139974. The cubic root of 2221184 is about 130.4752623603.

The spelling of 2221184 in words is "two million, two hundred twenty-one thousand, one hundred eighty-four".