122347225778 has 18 divisors (see below), whose sum is σ = 194964602871. Its totient is φ = 57571207744.

The previous prime is 122347225747. The next prime is 122347225783. The reversal of 122347225778 is 877522743221.

It can be written as a sum of positive squares in 5 ways, for example, as 120531869329 + 1815356449 = 347177^2 + 42607^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=247333.

It is a Duffinian number.

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 8402048 + ... + 8416596.

Almost surely, 2^122347225778 is an apocalyptic number.

122347225778 is a deficient number, since it is larger than the sum of its proper divisors (72617377093).

122347225778 is an frugal number, since it uses more digits than its factorization.

122347225778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29134 (or 14568 counting only the distinct ones).

The product of its digits is 2634240, while the sum is 50.

Multiplying 122347225778 by its sum of digits (50), we get a square (6117361288900 = 2473330²).

Adding to 122347225778 its reverse (877522743221), we get a palindrome (999869968999).

The spelling of 122347225778 in words is "one hundred twenty-two billion, three hundred forty-seven million, two hundred twenty-five thousand, seven hundred seventy-eight".