2235221 has 2 divisors, whose sum is σ = 2235222. Its totient is φ = 2235220.

The previous prime is 2235199. The next prime is 2235227. The reversal of 2235221 is 1225322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2235025 + 196 = 1495^2 + 14^2 .

It is a cyclic number.

It is not a de Polignac number, because 2235221 - 2¹⁴ = 2218837 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 2² + 2³ + 3⁹ + 5⁹ + 2⁸ + 2¹⁸ + 1 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2235221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2235227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1117610 + 1117611.

It is an arithmetic number, because the mean of its divisors is an integer number (1117611).

2^2235221 is an apocalyptic number.

It is an amenable number.

2235221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2235221 is an equidigital number, since it uses as much as digits as its factorization.

2235221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240, while the sum is 17.

The square root of 2235221 is about 1495.0655504024. The cubic root of 2235221 is about 130.7495360012.

The spelling of 2235221 in words is "two million, two hundred thirty-five thousand, two hundred twenty-one".