1222001122122 has 24 divisors (see below), whose sum is σ = 2888366289120. Its totient is φ = 370303370280.

The previous prime is 1222001122109. The next prime is 1222001122157. The reversal of 1222001122122 is 2212211002221.

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 = 1222001122095 and 1222001122104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3085861222 + ... + 3085861617.

It is an arithmetic number, because the mean of its divisors is an integer number (120348595380).

Almost surely, 2^{1222001122122} is an apocalyptic number.

1222001122122 is an abundant number, since it is smaller than the sum of its proper divisors (1666365166998).

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

1222001122122 is a wasteful number, since it uses less digits than its factorization.

1222001122122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6171722858 (or 6171722855 counting only the distinct ones).

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

Adding to 1222001122122 its reverse (2212211002221), we get a palindrome (3434212124343).

The spelling of 1222001122122 in words is "one trillion, two hundred twenty-two billion, one million, one hundred twenty-two thousand, one hundred twenty-two".