205231222 has 16 divisors (see below), whose sum is σ = 363174912. Its totient is φ = 85118760.

The previous prime is 205231151. The next prime is 205231223. The reversal of 205231222 is 222132502.

It is a super-2 number, since 2×205231222² = 84239708967226568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 205231222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205231223) 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, 236008 + ... + 236875.

It is an arithmetic number, because the mean of its divisors is an integer number (22698432).

Almost surely, 2^205231222 is an apocalyptic number.

205231222 is a deficient number, since it is larger than the sum of its proper divisors (157943690).

205231222 is a wasteful number, since it uses less digits than its factorization.

205231222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472923.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 205231222 is about 14325.8934101856. The cubic root of 205231222 is about 589.8584569011.

Adding to 205231222 its reverse (222132502), we get a palindrome (427363724).

The spelling of 205231222 in words is "two hundred five million, two hundred thirty-one thousand, two hundred twenty-two".