12101222173 has 2 divisors, whose sum is σ = 12101222174. Its totient is φ = 12101222172.

The previous prime is 12101222171. The next prime is 12101222209. The reversal of 12101222173 is 37122210121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6702205689 + 5399016484 = 81867^2 + 73478^2 .

It is a cyclic number.

It is not a de Polignac number, because 12101222173 - 2¹ = 12101222171 is a prime.

Together with 12101222171, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12101222171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050611086 + 6050611087.

It is an arithmetic number, because the mean of its divisors is an integer number (6050611087).

Almost surely, 2^12101222173 is an apocalyptic number.

It is an amenable number.

12101222173 is a deficient number, since it is larger than the sum of its proper divisors (1).

12101222173 is an equidigital number, since it uses as much as digits as its factorization.

12101222173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 22.

Adding to 12101222173 its reverse (37122210121), we get a palindrome (49223432294).

The spelling of 12101222173 in words is "twelve billion, one hundred one million, two hundred twenty-two thousand, one hundred seventy-three".