11112112189 has 2 divisors, whose sum is σ = 11112112190. Its totient is φ = 11112112188.

The previous prime is 11112112157. The next prime is 11112112201. The reversal of 11112112189 is 98121121111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10519579225 + 592532964 = 102565^2 + 24342^2 .

It is a cyclic number.

It is not a de Polignac number, because 11112112189 - 2⁵ = 11112112157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11112112139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5556056094 + 5556056095.

It is an arithmetic number, because the mean of its divisors is an integer number (5556056095).

Almost surely, 2^11112112189 is an apocalyptic number.

It is an amenable number.

11112112189 is a deficient number, since it is larger than the sum of its proper divisors (1).

11112112189 is an equidigital number, since it uses as much as digits as its factorization.

11112112189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 28.

The spelling of 11112112189 in words is "eleven billion, one hundred twelve million, one hundred twelve thousand, one hundred eighty-nine".