201224 has 8 divisors (see below), whose sum is σ = 377310. Its totient is φ = 100608.

The previous prime is 201211. The next prime is 201233. The reversal of 201224 is 422102.

It can be written as a sum of positive squares in only one way, i.e., 168100 + 33124 = 410^2 + 182^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12569 + ... + 12584.

2²⁰¹²²⁴ is an apocalyptic number.

It is an amenable number.

201224 is a deficient number, since it is larger than the sum of its proper divisors (176086).

201224 is a wasteful number, since it uses less digits than its factorization.

201224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25159 (or 25155 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 201224 is about 448.5799817201. The cubic root of 201224 is about 58.5994121402.

Adding to 201224 its reverse (422102), we get a palindrome (623326).

The spelling of 201224 in words is "two hundred one thousand, two hundred twenty-four", and thus it is an iban number.