11101200109121 has 2 divisors, whose sum is σ = 11101200109122. Its totient is φ = 11101200109120.

The previous prime is 11101200109117. The next prime is 11101200109123. The reversal of 11101200109121 is 12190100210111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6690628890625 + 4410571218496 = 2586625^2 + 2100136^2 .

It is a cyclic number.

It is not a de Polignac number, because 11101200109121 - 2² = 11101200109117 is a prime.

Together with 11101200109123, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 11101200109093 and 11101200109102.

It is not a weakly prime, because it can be changed into another prime (11101200109123) 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 as a sum of consecutive naturals, namely, 5550600054560 + 5550600054561.

It is an arithmetic number, because the mean of its divisors is an integer number (5550600054561).

Almost surely, 2^{11101200109121} is an apocalyptic number.

It is an amenable number.

11101200109121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11101200109121 is an equidigital number, since it uses as much as digits as its factorization.

11101200109121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 20.

Adding to 11101200109121 its reverse (12190100210111), we get a palindrome (23291300319232).

The spelling of 11101200109121 in words is "eleven trillion, one hundred one billion, two hundred million, one hundred nine thousand, one hundred twenty-one".