11101112200121 has 4 divisors (see below), whose sum is σ = 11121406738512. Its totient is φ = 11080817661732.

The previous prime is 11101112200103. The next prime is 11101112200141. The reversal of 11101112200121 is 12100221110111.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11101112200121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11101112200096 and 11101112200105.

It is not an unprimeable number, because it can be changed into a prime (11101112200141) 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, 10147268375 + ... + 10147269468.

It is an arithmetic number, because the mean of its divisors is an integer number (2780351684628).

Almost surely, 2^{11101112200121} is an apocalyptic number.

It is an amenable number.

11101112200121 is a deficient number, since it is larger than the sum of its proper divisors (20294538391).

11101112200121 is an equidigital number, since it uses as much as digits as its factorization.

11101112200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20294538390.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 11101112200121 its reverse (12100221110111), we get a palindrome (23201333310232).

The spelling of 11101112200121 in words is "eleven trillion, one hundred one billion, one hundred twelve million, two hundred thousand, one hundred twenty-one".