205151212 has 24 divisors (see below), whose sum is σ = 413262080. Its totient is φ = 87287760.

The previous prime is 205151203. The next prime is 205151239. The reversal of 205151212 is 212151502.

It is a zygodrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 205151212.

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, 22464 + ... + 30247.

Almost surely, 2^205151212 is an apocalyptic number.

It is an amenable number.

205151212 is an abundant number, since it is smaller than the sum of its proper divisors (208110868).

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

205151212 is a wasteful number, since it uses less digits than its factorization.

205151212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52861 (or 52859 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 205151212 is about 14323.1006419700. The cubic root of 205151212 is about 589.7817942488.

The spelling of 205151212 in words is "two hundred five million, one hundred fifty-one thousand, two hundred twelve".