203321132220 has 24 divisors (see below), whose sum is σ = 569299170384. Its totient is φ = 54218968576.

The previous prime is 203321132099. The next prime is 203321132227. The reversal of 203321132220 is 22231123302.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203321132227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1694342709 + ... + 1694342828.

It is an arithmetic number, because the mean of its divisors is an integer number (23720798766).

Almost surely, 2^203321132220 is an apocalyptic number.

203321132220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203321132220 is an abundant number, since it is smaller than the sum of its proper divisors (365978038164).

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

203321132220 is a wasteful number, since it uses less digits than its factorization.

203321132220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3388685549 (or 3388685547 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 203321132220 its reverse (22231123302), we get a palindrome (225552255522).

The spelling of 203321132220 in words is "two hundred three billion, three hundred twenty-one million, one hundred thirty-two thousand, two hundred twenty".