1111121811112 has 32 divisors (see below), whose sum is σ = 2206035414720. Its totient is φ = 522849606400.

The previous prime is 1111121811101. The next prime is 1111121811113. The reversal of 1111121811112 is 2111181211111.

It is a happy number.

It is a super-2 number, since 2×1111121811112² (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 not an unprimeable number, because it can be changed into a prime (1111121811113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2124303 + ... + 2595169.

It is an arithmetic number, because the mean of its divisors is an integer number (68938606710).

Almost surely, 2^{1111121811112} is an apocalyptic number.

It is an amenable number.

1111121811112 is a deficient number, since it is larger than the sum of its proper divisors (1094913603608).

1111121811112 is a wasteful number, since it uses less digits than its factorization.

1111121811112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488241 (or 488237 counting only the distinct ones).

The product of its digits is 32, while the sum is 22.

The spelling of 1111121811112 in words is "one trillion, one hundred eleven billion, one hundred twenty-one million, eight hundred eleven thousand, one hundred twelve".