1112221212112 has 20 divisors (see below), whose sum is σ = 2205043218400. Its totient is φ = 543177800928.

The previous prime is 1112221212103. The next prime is 1112221212163. The reversal of 1112221212112 is 2112121222111.

It is a happy number.

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 1112221212112.

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, 808299612 + ... + 808300987.

It is an arithmetic number, because the mean of its divisors is an integer number (110252160920).

Almost surely, 2^{1112221212112} is an apocalyptic number.

It is an amenable number.

1112221212112 is a deficient number, since it is larger than the sum of its proper divisors (1092822006288).

1112221212112 is a wasteful number, since it uses less digits than its factorization.

1112221212112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1616600650 (or 1616600644 counting only the distinct ones).

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

Adding to 1112221212112 its reverse (2112121222111), we get a palindrome (3224342434223).

Subtracting 1112221212112 from its reverse (2112121222111), we obtain a palindrome (999900009999).

The spelling of 1112221212112 in words is "one trillion, one hundred twelve billion, two hundred twenty-one million, two hundred twelve thousand, one hundred twelve".