9218201 has 12 divisors (see below), whose sum is σ = 9730812. Its totient is φ = 8730624.

The previous prime is 9218197. The next prime is 9218207. The reversal of 9218201 is 1028129.

9218201 = 259² + 260² + ... + 355².

It can be written as a sum of positive squares in 6 ways, for example, as 952576 + 8265625 = 976^2 + 2875^2 .

It is not a de Polignac number, because 9218201 - 2² = 9218197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9218207) 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, 81521 + ... + 81633.

It is an arithmetic number, because the mean of its divisors is an integer number (810901).

Almost surely, 2^9218201 is an apocalyptic number.

It is an amenable number.

9218201 is a deficient number, since it is larger than the sum of its proper divisors (512611).

9218201 is a wasteful number, since it uses less digits than its factorization.

9218201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268 (or 239 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 9218201 is about 3036.1490411375. The cubic root of 9218201 is about 209.6760007516.

The spelling of 9218201 in words is "nine million, two hundred eighteen thousand, two hundred one".