2112222111112 has 8 divisors (see below), whose sum is σ = 3960416458350. Its totient is φ = 1056111055552.

The previous prime is 2112222111059. The next prime is 2112222111121. The reversal of 2112222111112 is 2111112222112.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1090800603396 + 1021421507716 = 1044414^2 + 1010654^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×2112222111112² (a number of 25 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 2112222111112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132013881937 + ... + 132013881952.

Almost surely, 2^{2112222111112} is an apocalyptic number.

It is an amenable number.

2112222111112 is a deficient number, since it is larger than the sum of its proper divisors (1848194347238).

2112222111112 is a wasteful number, since it uses less digits than its factorization.

2112222111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264027763895 (or 264027763891 counting only the distinct ones).

The product of its digits is 64, while the sum is 19.

Adding to 2112222111112 its reverse (2111112222112), we get a palindrome (4223334333224).

The spelling of 2112222111112 in words is "two trillion, one hundred twelve billion, two hundred twenty-two million, one hundred eleven thousand, one hundred twelve".