203203132220 has 96 divisors (see below), whose sum is σ = 468194259456. Its totient is φ = 73468281600.

The previous prime is 203203132217. The next prime is 203203132267. The reversal of 203203132220 is 22231302302.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 203203132192 and 203203132201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71624642 + ... + 71627478.

It is an arithmetic number, because the mean of its divisors is an integer number (4877023536).

Almost surely, 2^203203132220 is an apocalyptic number.

203203132220 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 203203132220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234097129728).

203203132220 is an abundant number, since it is smaller than the sum of its proper divisors (264991127236).

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

203203132220 is a wasteful number, since it uses less digits than its factorization.

203203132220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4611 (or 4609 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 203203132220 its reverse (22231302302), we get a palindrome (225434434522).

The spelling of 203203132220 in words is "two hundred three billion, two hundred three million, one hundred thirty-two thousand, two hundred twenty".