112133111221 has 4 divisors (see below), whose sum is σ = 112348338444. Its totient is φ = 111917884000.

The previous prime is 112133111201. The next prime is 112133111227. The reversal of 112133111221 is 122111331211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 52584910596 + 59548200625 = 229314^2 + 244025^2 .

It is a cyclic number.

It is not a de Polignac number, because 112133111221 - 2⁹ = 112133110709 is a prime.

It is a super-2 number, since 2×112133111221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112133111227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107612830 + ... + 107613871.

It is an arithmetic number, because the mean of its divisors is an integer number (28087084611).

Almost surely, 2^112133111221 is an apocalyptic number.

It is an amenable number.

112133111221 is a deficient number, since it is larger than the sum of its proper divisors (215227223).

112133111221 is an equidigital number, since it uses as much as digits as its factorization.

112133111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215227222.

The product of its digits is 72, while the sum is 19.

Adding to 112133111221 its reverse (122111331211), we get a palindrome (234244442432).

The spelling of 112133111221 in words is "one hundred twelve billion, one hundred thirty-three million, one hundred eleven thousand, two hundred twenty-one".