111200100111121 has 4 divisors (see below), whose sum is σ = 127085828698432. Its totient is φ = 95314371523812.

The previous prime is 111200100111091. The next prime is 111200100111137. The reversal of 111200100111121 is 121111001002111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 111200100111121 - 2¹¹ = 111200100109073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111200100112121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7942864293645 + ... + 7942864293658.

It is an arithmetic number, because the mean of its divisors is an integer number (31771457174608).

Almost surely, 2^{111200100111121} is an apocalyptic number.

It is an amenable number.

111200100111121 is a deficient number, since it is larger than the sum of its proper divisors (15885728587311).

111200100111121 is an equidigital number, since it uses as much as digits as its factorization.

111200100111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15885728587310.

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

Adding to 111200100111121 its reverse (121111001002111), we get a palindrome (232311101113232).

The spelling of 111200100111121 in words is "one hundred eleven trillion, two hundred billion, one hundred million, one hundred eleven thousand, one hundred twenty-one".