204243100112 has 80 divisors (see below), whose sum is σ = 423468193920. Its totient is φ = 95152320000.

The previous prime is 204243100073. The next prime is 204243100141. The reversal of 204243100112 is 211001342402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4614278 + ... + 4658330.

It is an arithmetic number, because the mean of its divisors is an integer number (5293352424).

Almost surely, 2^204243100112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204243100112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211734096960).

204243100112 is an abundant number, since it is smaller than the sum of its proper divisors (219225093808).

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

204243100112 is a wasteful number, since it uses less digits than its factorization.

204243100112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44332 (or 44326 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 204243100112 its reverse (211001342402), we get a palindrome (415244442514).

The spelling of 204243100112 in words is "two hundred four billion, two hundred forty-three million, one hundred thousand, one hundred twelve".