12011118173 has 2 divisors, whose sum is σ = 12011118174. Its totient is φ = 12011118172.

The previous prime is 12011118151. The next prime is 12011118191. The reversal of 12011118173 is 37181111021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8796001369 + 3215116804 = 93787^2 + 56702^2 .

It is an emirp because it is prime and its reverse (37181111021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12011118173 - 2⁸ = 12011117917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12011118373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005559086 + 6005559087.

It is an arithmetic number, because the mean of its divisors is an integer number (6005559087).

Almost surely, 2^12011118173 is an apocalyptic number.

It is an amenable number.

12011118173 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011118173 is an equidigital number, since it uses as much as digits as its factorization.

12011118173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 26.

Adding to 12011118173 its reverse (37181111021), we get a palindrome (49192229194).

The spelling of 12011118173 in words is "twelve billion, eleven million, one hundred eighteen thousand, one hundred seventy-three".