1122121110222 has 96 divisors (see below), whose sum is σ = 2798034969600. Its totient is φ = 318366921024.

The previous prime is 1122121110199. The next prime is 1122121110289. The reversal of 1122121110222 is 2220111212211.

1122121110222 is a `hidden beast` number, since 1 + 1 + 221 + 211 + 10 + 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 = 1122121110195 and 1122121110204.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 16181728 + ... + 16250924.

It is an arithmetic number, because the mean of its divisors is an integer number (29146197600).

Almost surely, 2^{1122121110222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1122121110222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1399017484800).

1122121110222 is an abundant number, since it is smaller than the sum of its proper divisors (1675913859378).

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

1122121110222 is a wasteful number, since it uses less digits than its factorization.

1122121110222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70110 (or 70107 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1122121110222 its reverse (2220111212211), we get a palindrome (3342232322433).

The spelling of 1122121110222 in words is "one trillion, one hundred twenty-two billion, one hundred twenty-one million, one hundred ten thousand, two hundred twenty-two".