211202220112111 has 4 divisors (see below), whose sum is σ = 216353493773424. Its totient is φ = 206050946450800.

The previous prime is 211202220112099. The next prime is 211202220112133. The reversal of 211202220112111 is 111211022202112.

It is a happy number.

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 211202220112111 - 2⁹ = 211202220111599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211202220113111) 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, 2575636830595 + ... + 2575636830676.

It is an arithmetic number, because the mean of its divisors is an integer number (54088373443356).

Almost surely, 2^{211202220112111} is an apocalyptic number.

211202220112111 is a deficient number, since it is larger than the sum of its proper divisors (5151273661313).

211202220112111 is an equidigital number, since it uses as much as digits as its factorization.

211202220112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5151273661312.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 211202220112111 its reverse (111211022202112), we get a palindrome (322413242314223).

The spelling of 211202220112111 in words is "two hundred eleven trillion, two hundred two billion, two hundred twenty million, one hundred twelve thousand, one hundred eleven".