1222002112122 has 192 divisors, whose sum is σ = 3262503121920. Its totient is φ = 335559866400.

The previous prime is 1222002112057. The next prime is 1222002112129. The reversal of 1222002112122 is 2212112002221.

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 = 1222002112095 and 1222002112104.

It is not an unprimeable number, because it can be changed into a prime (1222002112129) 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 95 ways as a sum of consecutive naturals, for example, 4808097 + ... + 5055867.

It is an arithmetic number, because the mean of its divisors is an integer number (16992203760).

Almost surely, 2^{1222002112122} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222002112122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1631251560960).

1222002112122 is an abundant number, since it is smaller than the sum of its proper divisors (2040501009798).

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

1222002112122 is a wasteful number, since it uses less digits than its factorization.

1222002112122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247854 (or 247829 counting only the distinct ones).

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

Adding to 1222002112122 its reverse (2212112002221), we get a palindrome (3434114114343).

It can be divided in two parts, 122200 and 2112122, that added together give a palindrome (2234322).

The spelling of 1222002112122 in words is "one trillion, two hundred twenty-two billion, two million, one hundred twelve thousand, one hundred twenty-two".