1101022221222 has 256 divisors, whose sum is σ = 3111076823040. Its totient is φ = 280306915200.

The previous prime is 1101022221203. The next prime is 1101022221263. The reversal of 1101022221222 is 2221222201011.

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 = 1101022221195 and 1101022221204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 313590447 + ... + 313593957.

It is an arithmetic number, because the mean of its divisors is an integer number (12152643840).

Almost surely, 2^{1101022221222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1101022221222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1555538411520).

1101022221222 is an abundant number, since it is smaller than the sum of its proper divisors (2010054601818).

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

1101022221222 is a wasteful number, since it uses less digits than its factorization.

1101022221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5016 (or 5010 counting only the distinct ones).

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

Adding to 1101022221222 its reverse (2221222201011), we get a palindrome (3322244422233).

The spelling of 1101022221222 in words is "one trillion, one hundred one billion, twenty-two million, two hundred twenty-one thousand, two hundred twenty-two".