212031120111 has 4 divisors (see below), whose sum is σ = 282708160152. Its totient is φ = 141354080072.

The previous prime is 212031120109. The next prime is 212031120113. The reversal of 212031120111 is 111021130212.

212031120111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (212031120109) and next prime (212031120113).

It is a cyclic number.

It is not a de Polignac number, because 212031120111 - 2¹ = 212031120109 is a prime.

It is a super-3 number, since 3×212031120111³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212031120113) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 35338520016 + ... + 35338520021.

It is an arithmetic number, because the mean of its divisors is an integer number (70677040038).

Almost surely, 2^212031120111 is an apocalyptic number.

212031120111 is a deficient number, since it is larger than the sum of its proper divisors (70677040041).

212031120111 is an equidigital number, since it uses as much as digits as its factorization.

212031120111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70677040040.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 212031120111 its reverse (111021130212), we get a palindrome (323052250323).

The spelling of 212031120111 in words is "two hundred twelve billion, thirty-one million, one hundred twenty thousand, one hundred eleven".