212020330111 has 4 divisors (see below), whose sum is σ = 216020713752. Its totient is φ = 208019946472.

The previous prime is 212020330073. The next prime is 212020330163. The reversal of 212020330111 is 111033020212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212020330111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212020334111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2000191741 + ... + 2000191846.

It is an arithmetic number, because the mean of its divisors is an integer number (54005178438).

Almost surely, 2^212020330111 is an apocalyptic number.

212020330111 is a deficient number, since it is larger than the sum of its proper divisors (4000383641).

212020330111 is an equidigital number, since it uses as much as digits as its factorization.

212020330111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4000383640.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 212020330111 its reverse (111033020212), we get a palindrome (323053350323).

The spelling of 212020330111 in words is "two hundred twelve billion, twenty million, three hundred thirty thousand, one hundred eleven".