112443021221 has 4 divisors (see below), whose sum is σ = 114348835200. Its totient is φ = 110537207244.

The previous prime is 112443021191. The next prime is 112443021227. The reversal of 112443021221 is 122120344211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112443021221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112443021227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 952906901 + ... + 952907018.

It is an arithmetic number, because the mean of its divisors is an integer number (28587208800).

Almost surely, 2^112443021221 is an apocalyptic number.

It is an amenable number.

112443021221 is a deficient number, since it is larger than the sum of its proper divisors (1905813979).

112443021221 is an equidigital number, since it uses as much as digits as its factorization.

112443021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1905813978.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 112443021221 its reverse (122120344211), we get a palindrome (234563365432).

The spelling of 112443021221 in words is "one hundred twelve billion, four hundred forty-three million, twenty-one thousand, two hundred twenty-one".