204111012 has 24 divisors (see below), whose sum is σ = 544296256. Its totient is φ = 58317408.

The previous prime is 204110999. The next prime is 204111071. The reversal of 204111012 is 210111402.

It is a happy number.

It is a super-2 number, since 2×204111012² = 83322610439328288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1214863 + ... + 1215030.

Almost surely, 2^204111012 is an apocalyptic number.

It is an amenable number.

204111012 is an abundant number, since it is smaller than the sum of its proper divisors (340185244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204111012 is a wasteful number, since it uses less digits than its factorization.

204111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2429907 (or 2429905 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 204111012 is about 14286.7425258524. The cubic root of 204111012 is about 588.7832936307.

Adding to 204111012 its reverse (210111402), we get a palindrome (414222414).

The spelling of 204111012 in words is "two hundred four million, one hundred eleven thousand, twelve".