204120021104 has 20 divisors (see below), whose sum is σ = 396656090064. Its totient is φ = 101757159168.

The previous prime is 204120021101. The next prime is 204120021137. The reversal of 204120021104 is 401120021402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204120021101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18922652 + ... + 18933435.

Almost surely, 2^204120021104 is an apocalyptic number.

It is an amenable number.

204120021104 is a deficient number, since it is larger than the sum of its proper divisors (192536068960).

204120021104 is a wasteful number, since it uses less digits than its factorization.

204120021104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37856432 (or 37856426 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 204120021104 its reverse (401120021402), we get a palindrome (605240042506).

The spelling of 204120021104 in words is "two hundred four billion, one hundred twenty million, twenty-one thousand, one hundred four".