212101011201111 has 4 divisors (see below), whose sum is σ = 282801348268152. Its totient is φ = 141400674134072.

The previous prime is 212101011200989. The next prime is 212101011201133. The reversal of 212101011201111 is 111102110101212.

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 212101011201111 - 2⁴⁶ = 141732267023447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212101011301111) 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, 35350168533516 + ... + 35350168533521.

It is an arithmetic number, because the mean of its divisors is an integer number (70700337067038).

Almost surely, 2^{212101011201111} is an apocalyptic number.

212101011201111 is a deficient number, since it is larger than the sum of its proper divisors (70700337067041).

212101011201111 is an equidigital number, since it uses as much as digits as its factorization.

212101011201111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70700337067040.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 212101011201111 its reverse (111102110101212), we get a palindrome (323203121302323).

The spelling of 212101011201111 in words is "two hundred twelve trillion, one hundred one billion, eleven million, two hundred one thousand, one hundred eleven".