3622221 has 12 divisors (see below), whose sum is σ = 5311072. Its totient is φ = 2378376.

The previous prime is 3622219. The next prime is 3622231. The reversal of 3622221 is 1222263.

It is not a de Polignac number, because 3622221 - 2¹ = 3622219 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 = 3622194 and 3622203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3622231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2401 + ... + 3606.

Almost surely, 2^3622221 is an apocalyptic number.

It is an amenable number.

3622221 is a deficient number, since it is larger than the sum of its proper divisors (1688851).

3622221 is a wasteful number, since it uses less digits than its factorization.

3622221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6080 (or 6077 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 3622221 is about 1903.2133353883. The cubic root of 3622221 is about 153.5765762214.

Adding to 3622221 its reverse (1222263), we get a palindrome (4844484).

The spelling of 3622221 in words is "three million, six hundred twenty-two thousand, two hundred twenty-one".