211200111111 has 16 divisors (see below), whose sum is σ = 311408386560. Its totient is φ = 126246640320.

The previous prime is 211200111103. The next prime is 211200111149. The reversal of 211200111111 is 111111002112.

It is not a de Polignac number, because 211200111111 - 2³ = 211200111103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211200111011) 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, 43833231 + ... + 43838048.

It is an arithmetic number, because the mean of its divisors is an integer number (19463024160).

Almost surely, 2^211200111111 is an apocalyptic number.

211200111111 is a deficient number, since it is larger than the sum of its proper divisors (100208275449).

211200111111 is a wasteful number, since it uses less digits than its factorization.

211200111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87671366.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 211200111111 its reverse (111111002112), we get a palindrome (322311113223).

The spelling of 211200111111 in words is "two hundred eleven billion, two hundred million, one hundred eleven thousand, one hundred eleven".