222221110122 has 192 divisors, whose sum is σ = 554333644800. Its totient is φ = 65439588960.

The previous prime is 222221110109. The next prime is 222221110127. The reversal of 222221110122 is 221011122222.

It is a happy number.

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 = 222221110095 and 222221110104.

It is not an unprimeable number, because it can be changed into a prime (222221110127) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 213879279 + ... + 213880317.

It is an arithmetic number, because the mean of its divisors is an integer number (2887154400).

Almost surely, 2^222221110122 is an apocalyptic number.

222221110122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 222221110122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277166822400).

222221110122 is an abundant number, since it is smaller than the sum of its proper divisors (332112534678).

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

222221110122 is a wasteful number, since it uses less digits than its factorization.

222221110122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318 (or 1265 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 222221110122 its reverse (221011122222), we get a palindrome (443232232344).

The spelling of 222221110122 in words is "two hundred twenty-two billion, two hundred twenty-one million, one hundred ten thousand, one hundred twenty-two".