205121430322 has 16 divisors (see below), whose sum is σ = 311434355232. Its totient is φ = 101310337440.

The previous prime is 205121430299. The next prime is 205121430341. The reversal of 205121430322 is 223034121502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1105297 + ... + 1277467.

It is an arithmetic number, because the mean of its divisors is an integer number (19464647202).

Almost surely, 2^205121430322 is an apocalyptic number.

205121430322 is a deficient number, since it is larger than the sum of its proper divisors (106312924910).

205121430322 is a wasteful number, since it uses less digits than its factorization.

205121430322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179433.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 205121430322 its reverse (223034121502), we get a palindrome (428155551824).

The spelling of 205121430322 in words is "two hundred five billion, one hundred twenty-one million, four hundred thirty thousand, three hundred twenty-two".