204203232220 has 48 divisors (see below), whose sum is σ = 464393532960. Its totient is φ = 74976880896.

The previous prime is 204203232151. The next prime is 204203232221. The reversal of 204203232220 is 22232302402.

It is a super-2 number, since 2×204203232220² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 204203232191 and 204203232200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204203232221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2147307 + ... + 2240386.

It is an arithmetic number, because the mean of its divisors is an integer number (9674865270).

Almost surely, 2^204203232220 is an apocalyptic number.

204203232220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204203232220 is an abundant number, since it is smaller than the sum of its proper divisors (260190300740).

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

204203232220 is a wasteful number, since it uses less digits than its factorization.

204203232220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4387894 (or 4387892 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 22.

Adding to 204203232220 its reverse (22232302402), we get a palindrome (226435534622).

The spelling of 204203232220 in words is "two hundred four billion, two hundred three million, two hundred thirty-two thousand, two hundred twenty".