211111212111112 has 16 divisors (see below), whose sum is σ = 395833678391340. Its totient is φ = 105555564540096.

The previous prime is 211111212111101. The next prime is 211111212111127.

211111212111112 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 196992060168996 + 14119151942116 = 14035386^2 + 3757546^2 .

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 211111212111112.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32666958 + ... + 38592130.

Almost surely, 2^{211111212111112} is an apocalyptic number.

It is an amenable number.

211111212111112 is a deficient number, since it is larger than the sum of its proper divisors (184722466280228).

211111212111112 is a wasteful number, since it uses less digits than its factorization.

211111212111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10378872 (or 10378868 counting only the distinct ones).

The product of its digits is 16, while the sum is 19.

The spelling of 211111212111112 in words is "two hundred eleven trillion, one hundred eleven billion, two hundred twelve million, one hundred eleven thousand, one hundred twelve".