1122120021222 has 16 divisors (see below), whose sum is σ = 2493600047280. Its totient is φ = 374040007056.

The previous prime is 1122120021151. The next prime is 1122120021223. The reversal of 1122120021222 is 2221200212211.

It is a happy number.

1122120021222 is a `hidden beast` number, since 1 + 1 + 221 + 200 + 21 + 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 = 1122120021195 and 1122120021204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122120021223) 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 7 ways as a sum of consecutive naturals, for example, 10390000143 + ... + 10390000250.

It is an arithmetic number, because the mean of its divisors is an integer number (155850002955).

Almost surely, 2^{1122120021222} is an apocalyptic number.

1122120021222 is an abundant number, since it is smaller than the sum of its proper divisors (1371480026058).

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

1122120021222 is a wasteful number, since it uses less digits than its factorization.

1122120021222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20780000404 (or 20780000398 counting only the distinct ones).

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

Adding to 1122120021222 its reverse (2221200212211), we get a palindrome (3343320233433).

The spelling of 1122120021222 in words is "one trillion, one hundred twenty-two billion, one hundred twenty million, twenty-one thousand, two hundred twenty-two".