212204330 has 16 divisors (see below), whose sum is σ = 411350184. Its totient is φ = 78352320.

The previous prime is 212204329. The next prime is 212204383. The reversal of 212204330 is 33402212.

It can be written as a sum of positive squares in 4 ways, for example, as 184715281 + 27489049 = 13591^2 + 5243^2 .

It is a junction number, because it is equal to n+sod(n) for n = 212204299 and 212204308.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 816041 + ... + 816300.

Almost surely, 2^212204330 is an apocalyptic number.

212204330 is a deficient number, since it is larger than the sum of its proper divisors (199145854).

212204330 is a wasteful number, since it uses less digits than its factorization.

212204330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1632361.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 212204330 is about 14567.2348096679. The cubic root of 212204330 is about 596.4647010891.

Adding to 212204330 its reverse (33402212), we get a palindrome (245606542).

The spelling of 212204330 in words is "two hundred twelve million, two hundred four thousand, three hundred thirty".