204213222 has 12 divisors (see below), whose sum is σ = 442462020. Its totient is φ = 68071068.

The previous prime is 204213211. The next prime is 204213239. The reversal of 204213222 is 222312402.

204213222 is a `hidden beast` number, since 20 + 421 + 3 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 11345179 = 204213222 / (2 + 0 + 4 + 2 + 1 + 3 + 2 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 204213195 and 204213204.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 5672572 + ... + 5672607.

It is an arithmetic number, because the mean of its divisors is an integer number (36871835).

Almost surely, 2^204213222 is an apocalyptic number.

204213222 is an abundant number, since it is smaller than the sum of its proper divisors (238248798).

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

204213222 is a wasteful number, since it uses less digits than its factorization.

204213222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11345187 (or 11345184 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 204213222 is about 14290.3191706833. The cubic root of 204213222 is about 588.8815563318.

Adding to 204213222 its reverse (222312402), we get a palindrome (426525624).

The spelling of 204213222 in words is "two hundred four million, two hundred thirteen thousand, two hundred twenty-two".