205012012 has 12 divisors (see below), whose sum is σ = 359301096. Its totient is φ = 102354560.

The previous prime is 205012001. The next prime is 205012043. The reversal of 205012012 is 210210502.

It is a junction number, because it is equal to n+sod(n) for n = 205011983 and 205012001.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34789 + ... + 40252.

It is an arithmetic number, because the mean of its divisors is an integer number (29941758).

Almost surely, 2^205012012 is an apocalyptic number.

It is an amenable number.

205012012 is a deficient number, since it is larger than the sum of its proper divisors (154289084).

205012012 is a wasteful number, since it uses less digits than its factorization.

205012012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75728 (or 75726 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 205012012 is about 14318.2405343673. The cubic root of 205012012 is about 589.6483703866.

Adding to 205012012 its reverse (210210502), we get a palindrome (415222514).

The spelling of 205012012 in words is "two hundred five million, twelve thousand, twelve".