204512111102 has 16 divisors (see below), whose sum is σ = 330374987712. Its totient is φ = 94387556640.

The previous prime is 204512111059. The next prime is 204512111107. The reversal of 204512111102 is 201111215402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204512111107) 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, 1073852 + ... + 1249872.

It is an arithmetic number, because the mean of its divisors is an integer number (20648436732).

Almost surely, 2^204512111102 is an apocalyptic number.

204512111102 is a deficient number, since it is larger than the sum of its proper divisors (125862876610).

204512111102 is a wasteful number, since it uses less digits than its factorization.

204512111102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220723.

The product of its (nonzero) digits is 160, while the sum is 20.

Adding to 204512111102 its reverse (201111215402), we get a palindrome (405623326504).

The spelling of 204512111102 in words is "two hundred four billion, five hundred twelve million, one hundred eleven thousand, one hundred two".