3822221 has 8 divisors (see below), whose sum is σ = 4135320. Its totient is φ = 3511872.

The previous prime is 3822191. The next prime is 3822223. The reversal of 3822221 is 1222283.

3822221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 265225 + 3556996 = 515^2 + 1886^2 .

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

It is not a de Polignac number, because 3822221 - 2⁶ = 3822157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3822193 and 3822202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3822223) 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, 2951 + ... + 4043.

It is an arithmetic number, because the mean of its divisors is an integer number (516915).

Almost surely, 2^3822221 is an apocalyptic number.

It is an amenable number.

3822221 is a deficient number, since it is larger than the sum of its proper divisors (313099).

3822221 is a wasteful number, since it uses less digits than its factorization.

3822221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375.

The product of its digits is 384, while the sum is 20.

The square root of 3822221 is about 1955.0501272346. The cubic root of 3822221 is about 156.3526565930.

The spelling of 3822221 in words is "three million, eight hundred twenty-two thousand, two hundred twenty-one".