205003212 has 12 divisors (see below), whose sum is σ = 478340856. Its totient is φ = 68334400.

The previous prime is 205003207. The next prime is 205003213. The reversal of 205003212 is 212300502.

It is a tau number, because it is divible by the number of its divisors (12).

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 205003191 and 205003200.

It is not an unprimeable number, because it can be changed into a prime (205003213) 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, 8541789 + ... + 8541812.

It is an arithmetic number, because the mean of its divisors is an integer number (39861738).

Almost surely, 2^205003212 is an apocalyptic number.

It is an amenable number.

205003212 is an abundant number, since it is smaller than the sum of its proper divisors (273337644).

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

205003212 is a wasteful number, since it uses less digits than its factorization.

205003212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17083608 (or 17083606 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 205003212 is about 14317.9332307425. The cubic root of 205003212 is about 589.6399335152.

Adding to 205003212 its reverse (212300502), we get a palindrome (417303714).

The spelling of 205003212 in words is "two hundred five million, three thousand, two hundred twelve".