211112111101 has 16 divisors (see below), whose sum is σ = 220990003200. Its totient is φ = 201421584000.

The previous prime is 211112111099. The next prime is 211112111107. The reversal of 211112111101 is 101111211112.

It is a cyclic number.

It is not a de Polignac number, because 211112111101 - 2¹ = 211112111099 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 (211112111107) 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, 710185 + ... + 962593.

It is an arithmetic number, because the mean of its divisors is an integer number (13811875200).

Almost surely, 2^211112111101 is an apocalyptic number.

It is an amenable number.

211112111101 is a deficient number, since it is larger than the sum of its proper divisors (9877892099).

211112111101 is a wasteful number, since it uses less digits than its factorization.

211112111101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252780.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 211112111101 its reverse (101111211112), we get a palindrome (312223322213).

The spelling of 211112111101 in words is "two hundred eleven billion, one hundred twelve million, one hundred eleven thousand, one hundred one".