201323221000 has 256 divisors, whose sum is σ = 542370816000. Its totient is φ = 69176160000.

The previous prime is 201323220979. The next prime is 201323221013. The reversal of 201323221000 is 122323102.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 100109995 + ... + 100112005.

It is an arithmetic number, because the mean of its divisors is an integer number (2118636000).

Almost surely, 2^201323221000 is an apocalyptic number.

201323221000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201323221000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271185408000).

201323221000 is an abundant number, since it is smaller than the sum of its proper divisors (341047595000).

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

201323221000 is a wasteful number, since it uses less digits than its factorization.

201323221000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2541 (or 2527 counting only the distinct ones).

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

Adding to 201323221000 its reverse (122323102), we get a palindrome (201445544102).

The spelling of 201323221000 in words is "two hundred one billion, three hundred twenty-three million, two hundred twenty-one thousand".