201221332 has 12 divisors (see below), whose sum is σ = 379224916. Its totient is φ = 92871360.

The previous prime is 201221327. The next prime is 201221347. The reversal of 201221332 is 233122102.

It can be written as a sum of positive squares in 2 ways, for example, as 80353296 + 120868036 = 8964^2 + 10994^2 .

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, 1934769 + ... + 1934872.

Almost surely, 2^201221332 is an apocalyptic number.

It is an amenable number.

201221332 is a deficient number, since it is larger than the sum of its proper divisors (178003584).

201221332 is a wasteful number, since it uses less digits than its factorization.

201221332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3869658 (or 3869656 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 201221332 is about 14185.2505088913. The cubic root of 201221332 is about 585.9915315204.

Adding to 201221332 its reverse (233122102), we get a palindrome (434343434).

The spelling of 201221332 in words is "two hundred one million, two hundred twenty-one thousand, three hundred thirty-two".