122215379173 has 4 divisors (see below), whose sum is σ = 122427191500. Its totient is φ = 122003566848.

The previous prime is 122215379161. The next prime is 122215379183. The reversal of 122215379173 is 371973512221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 371973512221 = 811 ⋅458660311.

It can be written as a sum of positive squares in 2 ways, for example, as 106828961409 + 15386417764 = 326847^2 + 124042^2 .

It is a cyclic number.

It is not a de Polignac number, because 122215379173 - 2²¹ = 122213282021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122215379113) 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 3 ways as a sum of consecutive naturals, for example, 105905298 + ... + 105906451.

It is an arithmetic number, because the mean of its divisors is an integer number (30606797875).

Almost surely, 2^122215379173 is an apocalyptic number.

It is an amenable number.

122215379173 is a deficient number, since it is larger than the sum of its proper divisors (211812327).

122215379173 is an equidigital number, since it uses as much as digits as its factorization.

122215379173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211812326.

The product of its digits is 158760, while the sum is 43.

The spelling of 122215379173 in words is "one hundred twenty-two billion, two hundred fifteen million, three hundred seventy-nine thousand, one hundred seventy-three".