1222123013173 has 2 divisors, whose sum is σ = 1222123013174. Its totient is φ = 1222123013172.

The previous prime is 1222123013171. The next prime is 1222123013213. The reversal of 1222123013173 is 3713103212221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 791462888164 + 430660125009 = 889642^2 + 656247^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222123013173 - 2¹ = 1222123013171 is a prime.

Together with 1222123013171, 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 (1222123013171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611061506586 + 611061506587.

It is an arithmetic number, because the mean of its divisors is an integer number (611061506587).

Almost surely, 2^{1222123013173} is an apocalyptic number.

It is an amenable number.

1222123013173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222123013173 is an equidigital number, since it uses as much as digits as its factorization.

1222123013173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

Adding to 1222123013173 its reverse (3713103212221), we get a palindrome (4935226225394).

The spelling of 1222123013173 in words is "one trillion, two hundred twenty-two billion, one hundred twenty-three million, thirteen thousand, one hundred seventy-three".