205042222 has 16 divisors (see below), whose sum is σ = 383455872. Its totient is φ = 79886520.

The previous prime is 205042199. The next prime is 205042223. The reversal of 205042222 is 222240502.

It is a self number, because there is not a number n which added to its sum of digits gives 205042222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205042223) 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, 665568 + ... + 665875.

It is an arithmetic number, because the mean of its divisors is an integer number (23965992).

Almost surely, 2^205042222 is an apocalyptic number.

205042222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

205042222 is a deficient number, since it is larger than the sum of its proper divisors (178413650).

205042222 is a wasteful number, since it uses less digits than its factorization.

205042222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331463.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 205042222 is about 14319.2954435615. The cubic root of 205042222 is about 589.6773319454.

Adding to 205042222 its reverse (222240502), we get a palindrome (427282724).

The spelling of 205042222 in words is "two hundred five million, forty-two thousand, two hundred twenty-two".