11100112109 has 2 divisors, whose sum is σ = 11100112110. Its totient is φ = 11100112108.

The previous prime is 11100112099. The next prime is 11100112117. The reversal of 11100112109 is 90121100111.

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., 9575209609 + 1524902500 = 97853^2 + 39050^2 .

It is a cyclic number.

It is not a de Polignac number, because 11100112109 - 2²⁴ = 11083334893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11100118109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550056054 + 5550056055.

It is an arithmetic number, because the mean of its divisors is an integer number (5550056055).

Almost surely, 2^11100112109 is an apocalyptic number.

It is an amenable number.

11100112109 is a deficient number, since it is larger than the sum of its proper divisors (1).

11100112109 is an equidigital number, since it uses as much as digits as its factorization.

11100112109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 17.

The spelling of 11100112109 in words is "eleven billion, one hundred million, one hundred twelve thousand, one hundred nine".