122538349218 has 16 divisors (see below), whose sum is σ = 245169316800. Its totient is φ = 40830680016.

The previous prime is 122538349211. The next prime is 122538349223. The reversal of 122538349218 is 812943835221.

It is not an unprimeable number, because it can be changed into a prime (122538349211) 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 7 ways as a sum of consecutive naturals, for example, 3841893 + ... + 3873656.

It is an arithmetic number, because the mean of its divisors is an integer number (15323082300).

Almost surely, 2^122538349218 is an apocalyptic number.

122538349218 is an abundant number, since it is smaller than the sum of its proper divisors (122630967582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122538349218 is a wasteful number, since it uses less digits than its factorization.

122538349218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7718201.

The product of its digits is 829440, while the sum is 48.

The spelling of 122538349218 in words is "one hundred twenty-two billion, five hundred thirty-eight million, three hundred forty-nine thousand, two hundred eighteen".