204521345021223 has 12 divisors (see below), whose sum is σ = 295420735462320. Its totient is φ = 136347094943136.

The previous prime is 204521345021219. The next prime is 204521345021237. The reversal of 204521345021223 is 322120543125402.

204521345021223 is a `hidden beast` number, since 2 + 0 + 4 + 5 + 2 + 134 + 502 + 12 + 2 + 3 = 666.

204521345021223 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 204521345021223 - 2² = 204521345021219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204521345022223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36257958 + ... + 41517251.

It is an arithmetic number, because the mean of its divisors is an integer number (24618394621860).

Almost surely, 2^{204521345021223} is an apocalyptic number.

204521345021223 is a deficient number, since it is larger than the sum of its proper divisors (90899390441097).

204521345021223 is a wasteful number, since it uses less digits than its factorization.

204521345021223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78067398 (or 78067395 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

Adding to 204521345021223 its reverse (322120543125402), we get a palindrome (526641888146625).

The spelling of 204521345021223 in words is "two hundred four trillion, five hundred twenty-one billion, three hundred forty-five million, twenty-one thousand, two hundred twenty-three".