1121112121112 has 16 divisors (see below), whose sum is σ = 2102147942400. Its totient is φ = 560539336480.

The previous prime is 1121112121081. The next prime is 1121112121133. The reversal of 1121112121112 is 2111212111211.

It is a super-2 number, since 2×1121112121112² (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 congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1803287 + ... + 2343942.

It is an arithmetic number, because the mean of its divisors is an integer number (131384246400).

Almost surely, 2^{1121112121112} is an apocalyptic number.

It is an amenable number.

1121112121112 is a deficient number, since it is larger than the sum of its proper divisors (981035821288).

1121112121112 is a wasteful number, since it uses less digits than its factorization.

1121112121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4181026 (or 4181022 counting only the distinct ones).

The product of its digits is 16, while the sum is 17.

Adding to 1121112121112 its reverse (2111212111211), we get a palindrome (3232324232323).

Subtracting 1121112121112 from its reverse (2111212111211), we obtain a palindrome (990099990099).

It can be divided in two parts, 11 and 21112121112, that multiplied together give a palindrome (232233332232).

The spelling of 1121112121112 in words is "one trillion, one hundred twenty-one billion, one hundred twelve million, one hundred twenty-one thousand, one hundred twelve".