201221132 has 12 divisors (see below), whose sum is σ = 402442320. Its totient is φ = 86237616.

The previous prime is 201221113. The next prime is 201221143. The reversal of 201221132 is 231122102.

It is a happy number.

201221132 is an admirable number.

It is a super-2 number, since 2×201221132² = 80979887926722848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3593207 + ... + 3593262.

It is an arithmetic number, because the mean of its divisors is an integer number (33536860).

Almost surely, 2^201221132 is an apocalyptic number.

It is an amenable number.

201221132 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201221132 is a wasteful number, since it uses less digits than its factorization.

201221132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7186480 (or 7186478 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 201221132 is about 14185.2434593136. The cubic root of 201221132 is about 585.9913373754.

Adding to 201221132 its reverse (231122102), we get a palindrome (432343234).

The spelling of 201221132 in words is "two hundred one million, two hundred twenty-one thousand, one hundred thirty-two".