111200102121 has 4 divisors (see below), whose sum is σ = 148266802832. Its totient is φ = 74133401412.

The previous prime is 111200102113. The next prime is 111200102131. The reversal of 111200102121 is 121201002111.

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 111200102121 - 2³ = 111200102113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111200102097 and 111200102106.

It is not an unprimeable number, because it can be changed into a prime (111200102131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18533350351 + ... + 18533350356.

It is an arithmetic number, because the mean of its divisors is an integer number (37066700708).

Almost surely, 2^111200102121 is an apocalyptic number.

It is an amenable number.

111200102121 is a deficient number, since it is larger than the sum of its proper divisors (37066700711).

111200102121 is an equidigital number, since it uses as much as digits as its factorization.

111200102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37066700710.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 111200102121 its reverse (121201002111), we get a palindrome (232401104232).

The spelling of 111200102121 in words is "one hundred eleven billion, two hundred million, one hundred two thousand, one hundred twenty-one".