204132121110 has 128 divisors (see below), whose sum is σ = 582081033600. Its totient is φ = 50725785600.

The previous prime is 204132121079. The next prime is 204132121117. The reversal of 204132121110 is 11121231402.

204132121110 is a `hidden beast` number, since 20 + 413 + 2 + 121 + 110 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204132121117) 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, 243426 + ... + 683754.

It is an arithmetic number, because the mean of its divisors is an integer number (4547508075).

Almost surely, 2^204132121110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204132121110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291040516800).

204132121110 is an abundant number, since it is smaller than the sum of its proper divisors (377948912490).

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

204132121110 is a wasteful number, since it uses less digits than its factorization.

204132121110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440463 (or 440457 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 204132121110 its reverse (11121231402), we get a palindrome (215253352512).

The spelling of 204132121110 in words is "two hundred four billion, one hundred thirty-two million, one hundred twenty-one thousand, one hundred ten".