201221960 has 32 divisors (see below), whose sum is σ = 456019200. Its totient is φ = 79907520.

The previous prime is 201221959. The next prime is 201222001. The reversal of 201221960 is 69122102.

201221960 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 12536 + ... + 23655.

It is an arithmetic number, because the mean of its divisors is an integer number (14250600).

Almost surely, 2^201221960 is an apocalyptic number.

201221960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201221960 is an abundant number, since it is smaller than the sum of its proper divisors (254797240).

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

201221960 is a wasteful number, since it uses less digits than its factorization.

201221960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36341 (or 36337 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 201221960 is about 14185.2726445423. The cubic root of 201221960 is about 585.9921411348.

The spelling of 201221960 in words is "two hundred one million, two hundred twenty-one thousand, nine hundred sixty".