201223444 has 12 divisors (see below), whose sum is σ = 352716084. Its totient is φ = 100447424.

The previous prime is 201223439. The next prime is 201223487. The reversal of 201223444 is 444322102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 90973444 + 110250000 = 9538^2 + 10500^2 .

It is a super-2 number, since 2×201223444² = 80981748830442272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38299 + ... + 43234.

It is an arithmetic number, because the mean of its divisors is an integer number (29393007).

Almost surely, 2^201223444 is an apocalyptic number.

It is an amenable number.

201223444 is a deficient number, since it is larger than the sum of its proper divisors (151492640).

201223444 is a wasteful number, since it uses less digits than its factorization.

201223444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82154 (or 82152 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 201223444 is about 14185.3249522173. The cubic root of 201223444 is about 585.9935816837.

Adding to 201223444 its reverse (444322102), we get a palindrome (645545546).

The spelling of 201223444 in words is "two hundred one million, two hundred twenty-three thousand, four hundred forty-four".