205315122 has 16 divisors (see below), whose sum is σ = 410814432. Its totient is φ = 68407680.

The previous prime is 205315063. The next prime is 205315127. The reversal of 205315122 is 221513502.

205315122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (205315127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9922 + ... + 22562.

It is an arithmetic number, because the mean of its divisors is an integer number (25675902).

Almost surely, 2^205315122 is an apocalyptic number.

205315122 is an abundant number, since it is smaller than the sum of its proper divisors (205499310).

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

205315122 is a wasteful number, since it uses less digits than its factorization.

205315122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15353.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 205315122 is about 14328.8213751167. The cubic root of 205315122 is about 589.9388254106.

Adding to 205315122 its reverse (221513502), we get a palindrome (426828624).

The spelling of 205315122 in words is "two hundred five million, three hundred fifteen thousand, one hundred twenty-two".