211112020111 has 16 divisors (see below), whose sum is σ = 213563508480. Its totient is φ = 208676422080.

The previous prime is 211112020103. The next prime is 211112020151. The reversal of 211112020111 is 111020211112.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 211112020111 - 2³ = 211112020103 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211112020091 and 211112020100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211112020151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65785875 + ... + 65789083.

It is an arithmetic number, because the mean of its divisors is an integer number (13347719280).

Almost surely, 2^211112020111 is an apocalyptic number.

211112020111 is a deficient number, since it is larger than the sum of its proper divisors (2451488369).

211112020111 is a wasteful number, since it uses less digits than its factorization.

211112020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5454.

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

Adding to 211112020111 its reverse (111020211112), we get a palindrome (322132231223).

The spelling of 211112020111 in words is "two hundred eleven billion, one hundred twelve million, twenty thousand, one hundred eleven".