204553111224 has 128 divisors (see below), whose sum is σ = 637806182400. Its totient is φ = 53110842240.

The previous prime is 204553111223. The next prime is 204553111261. The reversal of 204553111224 is 422111355402.

It is a super-2 number, since 2×204553111224² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 204553111191 and 204553111200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204553111223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5301169 + ... + 5339615.

It is an arithmetic number, because the mean of its divisors is an integer number (4982860800).

Almost surely, 2^204553111224 is an apocalyptic number.

204553111224 is a gapful number since it is divisible by the number (24) 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 204553111224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318903091200).

204553111224 is an abundant number, since it is smaller than the sum of its proper divisors (433253071176).

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

204553111224 is a wasteful number, since it uses less digits than its factorization.

204553111224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41353 (or 41349 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 204553111224 its reverse (422111355402), we get a palindrome (626664466626).

The spelling of 204553111224 in words is "two hundred four billion, five hundred fifty-three million, one hundred eleven thousand, two hundred twenty-four".