1222522112173 has 2 divisors, whose sum is σ = 1222522112174. Its totient is φ = 1222522112172.

The previous prime is 1222522112111. The next prime is 1222522112183. The reversal of 1222522112173 is 3712112252221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 739534641444 + 482987470729 = 859962^2 + 694973^2 .

It is an emirp because it is prime and its reverse (3712112252221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1222522112173 - 2³⁷ = 1085083158701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222522112183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611261056086 + 611261056087.

It is an arithmetic number, because the mean of its divisors is an integer number (611261056087).

Almost surely, 2^{1222522112173} is an apocalyptic number.

It is an amenable number.

1222522112173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222522112173 is an equidigital number, since it uses as much as digits as its factorization.

1222522112173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 31.

Adding to 1222522112173 its reverse (3712112252221), we get a palindrome (4934634364394).

The spelling of 1222522112173 in words is "one trillion, two hundred twenty-two billion, five hundred twenty-two million, one hundred twelve thousand, one hundred seventy-three".