204221034243 has 16 divisors (see below), whose sum is σ = 302556902400. Its totient is φ = 136144106280.

The previous prime is 204221034229. The next prime is 204221034263. The reversal of 204221034243 is 342430122402.

204221034243 is a `hidden beast` number, since 20 + 4 + 2 + 210 + 3 + 424 + 3 = 666.

204221034243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 204221034243 - 2¹⁷ = 204220903171 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (204221034263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1726678 + ... + 1841156.

It is an arithmetic number, because the mean of its divisors is an integer number (18909806400).

Almost surely, 2^204221034243 is an apocalyptic number.

204221034243 is a deficient number, since it is larger than the sum of its proper divisors (98335868157).

204221034243 is a wasteful number, since it uses less digits than its factorization.

204221034243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180559 (or 180553 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 204221034243 its reverse (342430122402), we get a palindrome (546651156645).

The spelling of 204221034243 in words is "two hundred four billion, two hundred twenty-one million, thirty-four thousand, two hundred forty-three".