1100122212222 has 24 divisors (see below), whose sum is σ = 2600288865720. Its totient is φ = 333370367280.

The previous prime is 1100122212187. The next prime is 1100122212223. The reversal of 1100122212222 is 2222122210011.

It is a happy number.

1100122212222 is a `hidden beast` number, since 110 + 0 + 122 + 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 = 1100122212195 and 1100122212204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100122212223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2778086197 + ... + 2778086592.

It is an arithmetic number, because the mean of its divisors is an integer number (108345369405).

Almost surely, 2^{1100122212222} is an apocalyptic number.

1100122212222 is an abundant number, since it is smaller than the sum of its proper divisors (1500166653498).

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

1100122212222 is a wasteful number, since it uses less digits than its factorization.

1100122212222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5556172808 (or 5556172805 counting only the distinct ones).

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

Adding to 1100122212222 its reverse (2222122210011), we get a palindrome (3322244422233).

The spelling of 1100122212222 in words is "one trillion, one hundred billion, one hundred twenty-two million, two hundred twelve thousand, two hundred twenty-two".