211120212101111 has 4 divisors (see below), whose sum is σ = 212384404988112. Its totient is φ = 209856019214112.

The previous prime is 211120212101011. The next prime is 211120212101137. The reversal of 211120212101111 is 111101212021112.

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 211120212101111 - 2⁴⁶ = 140751467923447 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211120212101111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211120212101011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 632096443250 + ... + 632096443583.

It is an arithmetic number, because the mean of its divisors is an integer number (53096101247028).

Almost surely, 2^{211120212101111} is an apocalyptic number.

211120212101111 is a deficient number, since it is larger than the sum of its proper divisors (1264192887001).

211120212101111 is a wasteful number, since it uses less digits than its factorization.

211120212101111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264192887000.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 211120212101111 its reverse (111101212021112), we get a palindrome (322221424122223).

The spelling of 211120212101111 in words is "two hundred eleven trillion, one hundred twenty billion, two hundred twelve million, one hundred one thousand, one hundred eleven".