122200212222 has 64 divisors (see below), whose sum is σ = 296563161600. Its totient is φ = 36990339840.

The previous prime is 122200212203. The next prime is 122200212227. The reversal of 122200212222 is 222212002221.

122200212222 is a `hidden beast` number, since 12 + 220 + 0 + 212 + 222 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 122200212195 and 122200212204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122200212227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 441103 + ... + 662549.

It is an arithmetic number, because the mean of its divisors is an integer number (4633799400).

Almost surely, 2^122200212222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122200212222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148281580800).

122200212222 is an abundant number, since it is smaller than the sum of its proper divisors (174362949378).

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

122200212222 is a wasteful number, since it uses less digits than its factorization.

122200212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222398 (or 222392 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 122200212222 its reverse (222212002221), we get a palindrome (344412214443).

The spelling of 122200212222 in words is "one hundred twenty-two billion, two hundred million, two hundred twelve thousand, two hundred twenty-two".