122181978328 has 16 divisors (see below), whose sum is σ = 231452975880. Its totient is φ = 60461184768.

The previous prime is 122181978323. The next prime is 122181978361. The reversal of 122181978328 is 823879181221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122181978323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78724726 + ... + 78726277.

Almost surely, 2^122181978328 is an apocalyptic number.

It is an amenable number.

122181978328 is a deficient number, since it is larger than the sum of its proper divisors (109270997552).

122181978328 is a wasteful number, since it uses less digits than its factorization.

122181978328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157451106 (or 157451102 counting only the distinct ones).

The product of its digits is 774144, while the sum is 52.

The spelling of 122181978328 in words is "one hundred twenty-two billion, one hundred eighty-one million, nine hundred seventy-eight thousand, three hundred twenty-eight".