201221232 has 40 divisors (see below), whose sum is σ = 521049984. Its totient is φ = 66915264.

The previous prime is 201221219. The next prime is 201221243. The reversal of 201221232 is 232122102.

It is a happy number.

It is a super-3 number, since 3×201221232³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16533 + ... + 25995.

Almost surely, 2^201221232 is an apocalyptic number.

It is an amenable number.

201221232 is an abundant number, since it is smaller than the sum of its proper divisors (319828752).

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

201221232 is a wasteful number, since it uses less digits than its factorization.

201221232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9917 (or 9911 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 201221232 is about 14185.2469841029. The cubic root of 201221232 is about 585.9914344479.

Adding to 201221232 its reverse (232122102), we get a palindrome (433343334).

The spelling of 201221232 in words is "two hundred one million, two hundred twenty-one thousand, two hundred thirty-two".