220112111121 has 32 divisors (see below), whose sum is σ = 336506849280. Its totient is φ = 125366951424.

The previous prime is 220112111081. The next prime is 220112111137. The reversal of 220112111121 is 121111211022.

It is a happy number.

220112111121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 220112111121 - 2⁶ = 220112111057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220112111121.

It is not an unprimeable number, because it can be changed into a prime (220112111161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21781756 + ... + 21791858.

It is an arithmetic number, because the mean of its divisors is an integer number (10515839040).

Almost surely, 2^220112111121 is an apocalyptic number.

220112111121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

220112111121 is a deficient number, since it is larger than the sum of its proper divisors (116394738159).

220112111121 is a wasteful number, since it uses less digits than its factorization.

220112111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13405.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 220112111121 its reverse (121111211022), we get a palindrome (341223322143).

Subtracting from 220112111121 its reverse (121111211022), we obtain a palindrome (99000900099).

The spelling of 220112111121 in words is "two hundred twenty billion, one hundred twelve million, one hundred eleven thousand, one hundred twenty-one".