122217173213 has 4 divisors (see below), whose sum is σ = 122221638720. Its totient is φ = 122212707708.

The previous prime is 122217173201. The next prime is 122217173231. The reversal of 122217173213 is 312371712221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 312371712221 = 47 ⋅6646206643.

It is a cyclic number.

It is not a de Polignac number, because 122217173213 - 2¹⁴ = 122217156829 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122217173213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122217173293) 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, 2191445 + ... + 2246522.

It is an arithmetic number, because the mean of its divisors is an integer number (30555409680).

Almost surely, 2^122217173213 is an apocalyptic number.

It is an amenable number.

122217173213 is a deficient number, since it is larger than the sum of its proper divisors (4465507).

122217173213 is an equidigital number, since it uses as much as digits as its factorization.

122217173213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4465506.

The product of its digits is 7056, while the sum is 32.

Adding to 122217173213 its reverse (312371712221), we get a palindrome (434588885434).

The spelling of 122217173213 in words is "one hundred twenty-two billion, two hundred seventeen million, one hundred seventy-three thousand, two hundred thirteen".