212021330213 has 32 divisors (see below), whose sum is σ = 267581242368. Its totient is φ = 163193529600.

The previous prime is 212021330207. The next prime is 212021330233. The reversal of 212021330213 is 312033120212.

It is a cyclic number.

It is not a de Polignac number, because 212021330213 - 2⁴ = 212021330197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021330233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2821853 + ... + 2896013.

It is an arithmetic number, because the mean of its divisors is an integer number (8361913824).

Almost surely, 2^212021330213 is an apocalyptic number.

It is an amenable number.

212021330213 is a deficient number, since it is larger than the sum of its proper divisors (55559912155).

212021330213 is a wasteful number, since it uses less digits than its factorization.

212021330213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74633.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 212021330213 its reverse (312033120212), we get a palindrome (524054450425).

The spelling of 212021330213 in words is "two hundred twelve billion, twenty-one million, three hundred thirty thousand, two hundred thirteen".