122000011218 has 80 divisors (see below), whose sum is σ = 288777186720. Its totient is φ = 38389909824.

The previous prime is 122000011183. The next prime is 122000011219. The reversal of 122000011218 is 812110000221.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 122000011218.

It is not an unprimeable number, because it can be changed into a prime (122000011219) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 801046 + ... + 941102.

It is an arithmetic number, because the mean of its divisors is an integer number (3609714834).

Almost surely, 2^122000011218 is an apocalyptic number.

122000011218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 122000011218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144388593360).

122000011218 is an abundant number, since it is smaller than the sum of its proper divisors (166777175502).

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

122000011218 is a wasteful number, since it uses less digits than its factorization.

122000011218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140373 (or 140364 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 122000011218 its reverse (812110000221), we get a palindrome (934110011439).

The spelling of 122000011218 in words is "one hundred twenty-two billion, eleven thousand, two hundred eighteen".