1112120111 has 4 divisors (see below), whose sum is σ = 1113199824. Its totient is φ = 1111040400.

The previous prime is 1112120089. The next prime is 1112120129. The reversal of 1112120111 is 1110212111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1110212111 = 17387 ⋅63853.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1112120111 is a prime.

It is a super-2 number, since 2×1112120111² = 2473622282581304642, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1112120092 and 1112120101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112120411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 538310 + ... + 540371.

It is an arithmetic number, because the mean of its divisors is an integer number (278299956).

Almost surely, 2^1112120111 is an apocalyptic number.

1112120111 is a deficient number, since it is larger than the sum of its proper divisors (1079713).

1112120111 is a wasteful number, since it uses less digits than its factorization.

1112120111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079712.

The product of its (nonzero) digits is 4, while the sum is 11.

The square root of 1112120111 is about 33348.4648972033. The cubic root of 1112120111 is about 1036.0575935221.

Adding to 1112120111 its reverse (1110212111), we get a palindrome (2222332222).

The spelling of 1112120111 in words is "one billion, one hundred twelve million, one hundred twenty thousand, one hundred eleven".