2194221 has 8 divisors (see below), whose sum is σ = 2934144. Its totient is φ = 1458560.

The previous prime is 2194201. The next prime is 2194229. The reversal of 2194221 is 1224912.

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 2194221 - 2¹⁰ = 2193197 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2194229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 445 + ... + 2141.

It is an arithmetic number, because the mean of its divisors is an integer number (366768).

2^2194221 is an apocalyptic number.

It is an amenable number.

2194221 is a deficient number, since it is larger than the sum of its proper divisors (739923).

2194221 is a wasteful number, since it uses less digits than its factorization.

2194221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2131.

The product of its digits is 288, while the sum is 21.

The square root of 2194221 is about 1481.2903159070. The cubic root of 2194221 is about 129.9451642495.

It can be divided in two parts, 2194 and 221, that added together give a triangular number (2415 = T₆₉).

The spelling of 2194221 in words is "two million, one hundred ninety-four thousand, two hundred twenty-one".