211002112111 has 4 divisors (see below), whose sum is σ = 241145270992. Its totient is φ = 180858953232.

The previous prime is 211002112093. The next prime is 211002112117. The reversal of 211002112111 is 111211200112.

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 211002112111 - 2¹³ = 211002103919 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211002112091 and 211002112100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211002112117) 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, 15071579430 + ... + 15071579443.

It is an arithmetic number, because the mean of its divisors is an integer number (60286317748).

Almost surely, 2^211002112111 is an apocalyptic number.

211002112111 is a deficient number, since it is larger than the sum of its proper divisors (30143158881).

211002112111 is an equidigital number, since it uses as much as digits as its factorization.

211002112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30143158880.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 211002112111 its reverse (111211200112), we get a palindrome (322213312223).

The spelling of 211002112111 in words is "two hundred eleven billion, two million, one hundred twelve thousand, one hundred eleven".