204123221404 has 6 divisors (see below), whose sum is σ = 357215637464. Its totient is φ = 102061610700.

The previous prime is 204123221381. The next prime is 204123221473. The reversal of 204123221404 is 404122321402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25515402672 + ... + 25515402679.

Almost surely, 2^204123221404 is an apocalyptic number.

It is an amenable number.

204123221404 is a deficient number, since it is larger than the sum of its proper divisors (153092416060).

204123221404 is a wasteful number, since it uses less digits than its factorization.

204123221404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51030805355 (or 51030805353 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 204123221404 its reverse (404122321402), we get a palindrome (608245542806).

The spelling of 204123221404 in words is "two hundred four billion, one hundred twenty-three million, two hundred twenty-one thousand, four hundred four".