211200111111112 has 8 divisors (see below), whose sum is σ = 396000208333350. Its totient is φ = 105600055555552.

The previous prime is 211200111111079. The next prime is 211200111111113. The reversal of 211200111111112 is 211111111002112.

It can be written as a sum of positive squares in only one way, i.e., 210400420894596 + 799690216516 = 14505186^2 + 894254^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (211200111111113) 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 as a sum of consecutive naturals, namely, 13200006944437 + ... + 13200006944452.

Almost surely, 2^{211200111111112} is an apocalyptic number.

It is an amenable number.

211200111111112 is a deficient number, since it is larger than the sum of its proper divisors (184800097222238).

211200111111112 is a wasteful number, since it uses less digits than its factorization.

211200111111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26400013888895 (or 26400013888891 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 211200111111112 its reverse (211111111002112), we get a palindrome (422311222113224).

The spelling of 211200111111112 in words is "two hundred eleven trillion, two hundred billion, one hundred eleven million, one hundred eleven thousand, one hundred twelve".