2218201 has 2 divisors, whose sum is σ = 2218202. Its totient is φ = 2218200.

The previous prime is 2218199. The next prime is 2218207. The reversal of 2218201 is 1028122.

2218201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1265625 + 952576 = 1125^2 + 976^2 .

It is a cyclic number.

It is not a de Polignac number, because 2218201 - 2¹ = 2218199 is a prime.

Together with 2218199, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2218207) 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 as a sum of consecutive naturals, namely, 1109100 + 1109101.

It is an arithmetic number, because the mean of its divisors is an integer number (1109101).

2^2218201 is an apocalyptic number.

It is an amenable number.

2218201 is a deficient number, since it is larger than the sum of its proper divisors (1).

2218201 is an equidigital number, since it uses as much as digits as its factorization.

2218201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 2218201 is about 1489.3626153493. The cubic root of 2218201 is about 130.4168277492.

The spelling of 2218201 in words is "two million, two hundred eighteen thousand, two hundred one".