213206216630 has 32 divisors (see below), whose sum is σ = 419626454688. Its totient is φ = 77350464000.

The previous prime is 213206216611. The next prime is 213206216681. The reversal of 213206216630 is 36612602312.

213206216630 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2190521 + ... + 2285780.

It is an arithmetic number, because the mean of its divisors is an integer number (13113326709).

Almost surely, 2^213206216630 is an apocalyptic number.

213206216630 is a deficient number, since it is larger than the sum of its proper divisors (206420238058).

213206216630 is a wasteful number, since it uses less digits than its factorization.

213206216630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4476752.

The product of its (nonzero) digits is 15552, while the sum is 32.

Adding to 213206216630 its reverse (36612602312), we get a palindrome (249818818942).

The spelling of 213206216630 in words is "two hundred thirteen billion, two hundred six million, two hundred sixteen thousand, six hundred thirty".