203232144220 has 192 divisors, whose sum is σ = 514934784000. Its totient is φ = 67278677760.

The previous prime is 203232144197. The next prime is 203232144229. The reversal of 203232144220 is 22441232302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203232144229) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 130359801 + ... + 130361359.

It is an arithmetic number, because the mean of its divisors is an integer number (2681952000).

Almost surely, 2^203232144220 is an apocalyptic number.

203232144220 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 203232144220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257467392000).

203232144220 is an abundant number, since it is smaller than the sum of its proper divisors (311702639780).

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

203232144220 is a wasteful number, since it uses less digits than its factorization.

203232144220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2233 (or 2217 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 203232144220 its reverse (22441232302), we get a palindrome (225673376522).

The spelling of 203232144220 in words is "two hundred three billion, two hundred thirty-two million, one hundred forty-four thousand, two hundred twenty".