205668122 has 16 divisors (see below), whose sum is σ = 354261600. Its totient is φ = 88565040.

The previous prime is 205668121. The next prime is 205668131. The reversal of 205668122 is 221866502.

It is not an unprimeable number, because it can be changed into a prime (205668121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245597 + ... + 246432.

It is an arithmetic number, because the mean of its divisors is an integer number (22141350).

Almost surely, 2^205668122 is an apocalyptic number.

205668122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

205668122 is a deficient number, since it is larger than the sum of its proper divisors (148593478).

205668122 is a wasteful number, since it uses less digits than its factorization.

205668122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492061.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 205668122 is about 14341.1339161170. The cubic root of 205668122 is about 590.2767274113.

The spelling of 205668122 in words is "two hundred five million, six hundred sixty-eight thousand, one hundred twenty-two".