204121224423 has 8 divisors (see below), whose sum is σ = 302401814000. Its totient is φ = 136080816264.

The previous prime is 204121224407. The next prime is 204121224449. The reversal of 204121224423 is 324422121402.

It is a happy number.

204121224423 is a `hidden beast` number, since 2 + 0 + 4 + 1 + 212 + 2 + 442 + 3 = 666.

It is not a de Polignac number, because 204121224423 - 2⁴ = 204121224407 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 7560045349 = 204121224423 / (2 + 0 + 4 + 1 + 2 + 1 + 2 + 2 + 4 + 4 + 2 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204121224493) 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, 3780022648 + ... + 3780022701.

It is an arithmetic number, because the mean of its divisors is an integer number (37800226750).

Almost surely, 2^204121224423 is an apocalyptic number.

204121224423 is a deficient number, since it is larger than the sum of its proper divisors (98280589577).

204121224423 is an equidigital number, since it uses as much as digits as its factorization.

204121224423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7560045358 (or 7560045352 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 204121224423 its reverse (324422121402), we get a palindrome (528543345825).

The spelling of 204121224423 in words is "two hundred four billion, one hundred twenty-one million, two hundred twenty-four thousand, four hundred twenty-three".