204212210 has 16 divisors (see below), whose sum is σ = 368841816. Its totient is φ = 81404928.

The previous prime is 204212207. The next prime is 204212231. The reversal of 204212210 is 12212402.

It can be written as a sum of positive squares in 4 ways, for example, as 196084009 + 8128201 = 14003^2 + 2851^2 .

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 7 ways as a sum of consecutive naturals, for example, 31919 + ... + 37778.

Almost surely, 2^204212210 is an apocalyptic number.

204212210 is a deficient number, since it is larger than the sum of its proper divisors (164629606).

204212210 is a wasteful number, since it uses less digits than its factorization.

204212210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69997.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 204212210 is about 14290.2837620532. The cubic root of 204212210 is about 588.8805835755.

Adding to 204212210 its reverse (12212402), we get a palindrome (216424612).

The spelling of 204212210 in words is "two hundred four million, two hundred twelve thousand, two hundred ten".