122111022222 has 144 divisors (see below), whose sum is σ = 311374863072. Its totient is φ = 34481462400.

The previous prime is 122111022179. The next prime is 122111022329. The reversal of 122111022222 is 222220111221.

It is a happy number.

It is a super-2 number, since 2×122111022222² (a number of 23 digits) contains 22 as substring.

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 = 122111022195 and 122111022204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 75986143 + ... + 75987749.

It is an arithmetic number, because the mean of its divisors is an integer number (2162325438).

Almost surely, 2^122111022222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122111022222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155687431536).

122111022222 is an abundant number, since it is smaller than the sum of its proper divisors (189263840850).

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

122111022222 is a wasteful number, since it uses less digits than its factorization.

122111022222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2583 (or 2573 counting only the distinct ones).

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

Adding to 122111022222 its reverse (222220111221), we get a palindrome (344331133443).

The spelling of 122111022222 in words is "one hundred twenty-two billion, one hundred eleven million, twenty-two thousand, two hundred twenty-two".