112121020111 has 4 divisors (see below), whose sum is σ = 112131777312. Its totient is φ = 112110262912.

The previous prime is 112121020051. The next prime is 112121020129. The reversal of 112121020111 is 111020121211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111020121211 = 18251 ⋅6082961.

It is a cyclic number.

It is not a de Polignac number, because 112121020111 - 2²⁷ = 111986802383 is a prime.

It is a super-2 number, since 2×112121020111² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112121020091 and 112121020100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112121020181) 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, 5362951 + ... + 5383816.

It is an arithmetic number, because the mean of its divisors is an integer number (28032944328).

Almost surely, 2^112121020111 is an apocalyptic number.

112121020111 is a deficient number, since it is larger than the sum of its proper divisors (10757201).

112121020111 is a wasteful number, since it uses less digits than its factorization.

112121020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10757200.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 112121020111 its reverse (111020121211), we get a palindrome (223141141322).

The spelling of 112121020111 in words is "one hundred twelve billion, one hundred twenty-one million, twenty thousand, one hundred eleven".