111200212111 has 4 divisors (see below), whose sum is σ = 112049068824. Its totient is φ = 110351355400.

The previous prime is 111200212103. The next prime is 111200212147. The reversal of 111200212111 is 111212002111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111200212111 - 2³ = 111200212103 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111200212091 and 111200212100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111200212171) 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 3 ways as a sum of consecutive naturals, for example, 424428160 + ... + 424428421.

It is an arithmetic number, because the mean of its divisors is an integer number (28012267206).

Almost surely, 2^111200212111 is an apocalyptic number.

111200212111 is a deficient number, since it is larger than the sum of its proper divisors (848856713).

111200212111 is an equidigital number, since it uses as much as digits as its factorization.

111200212111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848856712.

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

Adding to 111200212111 its reverse (111212002111), we get a palindrome (222412214222).

The spelling of 111200212111 in words is "one hundred eleven billion, two hundred million, two hundred twelve thousand, one hundred eleven".