205122204 has 72 divisors (see below), whose sum is σ = 627445728. Its totient is φ = 55157760.

The previous prime is 205122193. The next prime is 205122251. The reversal of 205122204 is 402221502.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19657 + ... + 28224.

It is an arithmetic number, because the mean of its divisors is an integer number (8714524).

Almost surely, 2^205122204 is an apocalyptic number.

It is an amenable number.

205122204 is an abundant number, since it is smaller than the sum of its proper divisors (422323524).

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

205122204 is a wasteful number, since it uses less digits than its factorization.

205122204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47915 (or 47910 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 205122204 is about 14322.0879762694. The cubic root of 205122204 is about 589.7539949221.

Adding to 205122204 its reverse (402221502), we get a palindrome (607343706).

The spelling of 205122204 in words is "two hundred five million, one hundred twenty-two thousand, two hundred four".