212101200021111 has 16 divisors (see below), whose sum is σ = 285980093614080. Its totient is φ = 139811563749440.

The previous prime is 212101200021089. The next prime is 212101200021157. The reversal of 212101200021111 is 111120002101212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 212101200021111 - 2⁶ = 212101200021047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212101200021911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91712746 + ... + 93996968.

It is an arithmetic number, because the mean of its divisors is an integer number (17873755850880).

Almost surely, 2^{212101200021111} is an apocalyptic number.

212101200021111 is a deficient number, since it is larger than the sum of its proper divisors (73878893592969).

212101200021111 is a wasteful number, since it uses less digits than its factorization.

212101200021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2632086.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 212101200021111 its reverse (111120002101212), we get a palindrome (323221202122323).

The spelling of 212101200021111 in words is "two hundred twelve trillion, one hundred one billion, two hundred million, twenty-one thousand, one hundred eleven".