122173144489 has 6 divisors (see below), whose sum is σ = 134289489530. Its totient is φ = 111066494880.

The previous prime is 122173144447. The next prime is 122173144507. The reversal of 122173144489 is 984441371221.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 109423347264 + 12749797225 = 330792^2 + 112915^2 .

It is not a de Polignac number, because 122173144489 - 2¹³ = 122173136297 is a prime.

It is a super-2 number, since 2×122173144489² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122173144439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 504847584 + ... + 504847825.

Almost surely, 2^122173144489 is an apocalyptic number.

It is an amenable number.

122173144489 is a deficient number, since it is larger than the sum of its proper divisors (12116345041).

122173144489 is a wasteful number, since it uses less digits than its factorization.

122173144489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009695431 (or 1009695420 counting only the distinct ones).

The product of its digits is 387072, while the sum is 46.

It can be divided in two parts, 122173 and 144489, that added together give a palindrome (266662).

The spelling of 122173144489 in words is "one hundred twenty-two billion, one hundred seventy-three million, one hundred forty-four thousand, four hundred eighty-nine".