11100000100121 has 2 divisors, whose sum is σ = 11100000100122. Its totient is φ = 11100000100120.

The previous prime is 11100000100051. The next prime is 11100000100139. The reversal of 11100000100121 is 12100100000111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11099958355600 + 41744521 = 3331660^2 + 6461^2 .

It is a cyclic number.

It is not a de Polignac number, because 11100000100121 - 2³⁰ = 11098926358297 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11100000100099 and 11100000100108.

It is not a weakly prime, because it can be changed into another prime (11100000100181) 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, 5550000050060 + 5550000050061.

It is an arithmetic number, because the mean of its divisors is an integer number (5550000050061).

Almost surely, 2^{11100000100121} is an apocalyptic number.

It is an amenable number.

11100000100121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11100000100121 is an equidigital number, since it uses as much as digits as its factorization.

11100000100121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 11100000100121 its reverse (12100100000111), we get a palindrome (23200100100232).

The spelling of 11100000100121 in words is "eleven trillion, one hundred billion, one hundred thousand, one hundred twenty-one".