212112212101111 has 4 divisors (see below), whose sum is σ = 242413956686992. Its totient is φ = 181810467515232.

The previous prime is 212112212101099. The next prime is 212112212101117. The reversal of 212112212101111 is 111101212211212.

212112212101111 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 a cyclic number.

It is not a de Polignac number, because 212112212101111 - 2⁵ = 212112212101079 is a prime.

It is a super-3 number, since 3×212112212101111³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212112212101117) 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, 15150872292930 + ... + 15150872292943.

It is an arithmetic number, because the mean of its divisors is an integer number (60603489171748).

Almost surely, 2^{212112212101111} is an apocalyptic number.

212112212101111 is a deficient number, since it is larger than the sum of its proper divisors (30301744585881).

212112212101111 is an equidigital number, since it uses as much as digits as its factorization.

212112212101111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30301744585880.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 212112212101111 its reverse (111101212211212), we get a palindrome (323213424312323).

The spelling of 212112212101111 in words is "two hundred twelve trillion, one hundred twelve billion, two hundred twelve million, one hundred one thousand, one hundred eleven".