12011021001173 has 2 divisors, whose sum is σ = 12011021001174. Its totient is φ = 12011021001172.

The previous prime is 12011021001169. The next prime is 12011021001257. The reversal of 12011021001173 is 37110012011021.

12011021001173 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7812120030289 + 4198900970884 = 2795017^2 + 2049122^2 .

It is a cyclic number.

It is not a de Polignac number, because 12011021001173 - 2² = 12011021001169 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12011021001163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005510500586 + 6005510500587.

It is an arithmetic number, because the mean of its divisors is an integer number (6005510500587).

Almost surely, 2^{12011021001173} is an apocalyptic number.

It is an amenable number.

12011021001173 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011021001173 is an equidigital number, since it uses as much as digits as its factorization.

12011021001173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 20.

Adding to 12011021001173 its reverse (37110012011021), we get a palindrome (49121033012194).

The spelling of 12011021001173 in words is "twelve trillion, eleven billion, twenty-one million, one thousand, one hundred seventy-three".