11101121011109 has 2 divisors, whose sum is σ = 11101121011110. Its totient is φ = 11101121011108.

The previous prime is 11101121011067. The next prime is 11101121011139. The reversal of 11101121011109 is 90111012110111.

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., 9494083075009 + 1607037936100 = 3081247^2 + 1267690^2 .

It is a cyclic number.

It is not a de Polignac number, because 11101121011109 - 2²⁴ = 11101104233893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11101121011139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550560505554 + 5550560505555.

It is an arithmetic number, because the mean of its divisors is an integer number (5550560505555).

Almost surely, 2^{11101121011109} is an apocalyptic number.

It is an amenable number.

11101121011109 is a deficient number, since it is larger than the sum of its proper divisors (1).

11101121011109 is an equidigital number, since it uses as much as digits as its factorization.

11101121011109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 20.

The spelling of 11101121011109 in words is "eleven trillion, one hundred one billion, one hundred twenty-one million, eleven thousand, one hundred nine".