122218888 has 32 divisors (see below), whose sum is σ = 252486720. Its totient is φ = 55000000.

The previous prime is 122218861. The next prime is 122218891. The reversal of 122218888 is 888812221.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 122218888.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2013 + ... + 15763.

It is an arithmetic number, because the mean of its divisors is an integer number (7890210).

Almost surely, 2^122218888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122218888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126243360).

122218888 is an abundant number, since it is smaller than the sum of its proper divisors (130267832).

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

122218888 is a wasteful number, since it uses less digits than its factorization.

122218888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13869 (or 13865 counting only the distinct ones).

The product of its digits is 32768, while the sum is 40.

The square root of 122218888 is about 11055.2651709491. The cubic root of 122218888 is about 496.2640048752.

The spelling of 122218888 in words is "one hundred twenty-two million, two hundred eighteen thousand, eight hundred eighty-eight".