11001312173 has 2 divisors, whose sum is σ = 11001312174. Its totient is φ = 11001312172.

The previous prime is 11001312149. The next prime is 11001312193. The reversal of 11001312173 is 37121310011.

It is an a-pointer prime, because the next prime (11001312193) can be obtained adding 11001312173 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9036783844 + 1964528329 = 95062^2 + 44323^2 .

It is a cyclic number.

It is not a de Polignac number, because 11001312173 - 2⁶ = 11001312109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11001312143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500656086 + 5500656087.

It is an arithmetic number, because the mean of its divisors is an integer number (5500656087).

Almost surely, 2^11001312173 is an apocalyptic number.

It is an amenable number.

11001312173 is a deficient number, since it is larger than the sum of its proper divisors (1).

11001312173 is an equidigital number, since it uses as much as digits as its factorization.

11001312173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 126, while the sum is 20.

Adding to 11001312173 its reverse (37121310011), we get a palindrome (48122622184).

The spelling of 11001312173 in words is "eleven billion, one million, three hundred twelve thousand, one hundred seventy-three".