11101200100121 has 2 divisors, whose sum is σ = 11101200100122. Its totient is φ = 11101200100120.

The previous prime is 11101200100103. The next prime is 11101200100187. The reversal of 11101200100121 is 12100100210111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10175053706896 + 926146393225 = 3189836^2 + 962365^2 .

It is an emirp because it is prime and its reverse (12100100210111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11101200100121 - 2²⁶ = 11101132991257 is a prime.

It is not a weakly prime, because it can be changed into another prime (11101200109121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550600050060 + 5550600050061.

It is an arithmetic number, because the mean of its divisors is an integer number (5550600050061).

Almost surely, 2^{11101200100121} is an apocalyptic number.

It is an amenable number.

11101200100121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11101200100121 is an equidigital number, since it uses as much as digits as its factorization.

11101200100121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 11101200100121 its reverse (12100100210111), we get a palindrome (23201300310232).

The spelling of 11101200100121 in words is "eleven trillion, one hundred one billion, two hundred million, one hundred thousand, one hundred twenty-one".