201322144 has 48 divisors (see below), whose sum is σ = 404097120. Its totient is φ = 98714880.

The previous prime is 201322141. The next prime is 201322181. The reversal of 201322144 is 441223102.

It is not an unprimeable number, because it can be changed into a prime (201322141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 608059 + ... + 608389.

It is an arithmetic number, because the mean of its divisors is an integer number (8418690).

Almost surely, 2^201322144 is an apocalyptic number.

It is an amenable number.

201322144 is an abundant number, since it is smaller than the sum of its proper divisors (202774976).

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

201322144 is a wasteful number, since it uses less digits than its factorization.

201322144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653 (or 645 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 201322144 is about 14188.8034731615. The cubic root of 201322144 is about 586.0893758773.

Adding to 201322144 its reverse (441223102), we get a palindrome (642545246).

The spelling of 201322144 in words is "two hundred one million, three hundred twenty-two thousand, one hundred forty-four".