212021330211 has 24 divisors (see below), whose sum is σ = 308714724864. Its totient is φ = 140211751680.

The previous prime is 212021330207. The next prime is 212021330233. The reversal of 212021330211 is 112033120212.

212021330211 is a `hidden beast` number, since 2 + 120 + 2 + 1 + 330 + 211 = 666.

It is not a de Polignac number, because 212021330211 - 2² = 212021330207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212021330111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9797275 + ... + 9818891.

It is an arithmetic number, because the mean of its divisors is an integer number (12863113536).

Almost surely, 2^212021330211 is an apocalyptic number.

212021330211 is a deficient number, since it is larger than the sum of its proper divisors (96693394653).

212021330211 is a wasteful number, since it uses less digits than its factorization.

212021330211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30331 (or 30328 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 212021330211 its reverse (112033120212), we get a palindrome (324054450423).

The spelling of 212021330211 in words is "two hundred twelve billion, twenty-one million, three hundred thirty thousand, two hundred eleven".