111210221200111 has 12 divisors (see below), whose sum is σ = 123449624496072. Its totient is φ = 100099208990000.

The previous prime is 111210221200079. The next prime is 111210221200189. The reversal of 111210221200111 is 111002122012111.

It is not a de Polignac number, because 111210221200111 - 2⁵ = 111210221200079 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 (111210221203111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4549951825 + ... + 4549976266.

It is an arithmetic number, because the mean of its divisors is an integer number (10287468708006).

Almost surely, 2^{111210221200111} is an apocalyptic number.

111210221200111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111210221200111 is a deficient number, since it is larger than the sum of its proper divisors (12239403295961).

111210221200111 is a wasteful number, since it uses less digits than its factorization.

111210221200111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9099928214 (or 9099928203 counting only the distinct ones).

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

Adding to 111210221200111 its reverse (111002122012111), we get a palindrome (222212343212222).

The spelling of 111210221200111 in words is "one hundred eleven trillion, two hundred ten billion, two hundred twenty-one million, two hundred thousand, one hundred eleven".