205120210 has 16 divisors (see below), whose sum is σ = 385269696. Its totient is φ = 78480688.

The previous prime is 205120183. The next prime is 205120231. The reversal of 205120210 is 12021502.

205120210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 445684 + ... + 446143.

It is an arithmetic number, because the mean of its divisors is an integer number (24079356).

Almost surely, 2^205120210 is an apocalyptic number.

205120210 is a deficient number, since it is larger than the sum of its proper divisors (180149486).

205120210 is a wasteful number, since it uses less digits than its factorization.

205120210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891857.

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

The square root of 205120210 is about 14322.0183633453. The cubic root of 205120210 is about 589.7520839096.

Adding to 205120210 its reverse (12021502), we get a palindrome (217141712).

The spelling of 205120210 in words is "two hundred five million, one hundred twenty thousand, two hundred ten".