2001222222112 has 24 divisors (see below), whose sum is σ = 4067000001792. Its totient is φ = 968333332800.

The previous prime is 2001222222061. The next prime is 2001222222119. The reversal of 2001222222112 is 2112222221002.

It is a self number, because there is not a number n which added to its sum of digits gives 2001222222112.

It is not an unprimeable number, because it can be changed into a prime (2001222222119) 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 3 ways as a sum of consecutive naturals, for example, 1008679564 + ... + 1008681547.

It is an arithmetic number, because the mean of its divisors is an integer number (169458333408).

Almost surely, 2^{2001222222112} is an apocalyptic number.

It is an amenable number.

2001222222112 is an abundant number, since it is smaller than the sum of its proper divisors (2065777779680).

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

2001222222112 is a wasteful number, since it uses less digits than its factorization.

2001222222112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2017361152 (or 2017361144 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 2001222222112 its reverse (2112222221002), we get a palindrome (4113444443114).

The spelling of 2001222222112 in words is "two trillion, one billion, two hundred twenty-two million, two hundred twenty-two thousand, one hundred twelve".