112188121 has 4 divisors (see below), whose sum is σ = 114304932. Its totient is φ = 110071312.

The previous prime is 112188031. The next prime is 112188127. The reversal of 112188121 is 121881211.

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 64080025 + 48108096 = 8005^2 + 6936^2 .

It is a cyclic number.

It is not a de Polignac number, because 112188121 - 2⁷ = 112187993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112188127) 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, 1058326 + ... + 1058431.

It is an arithmetic number, because the mean of its divisors is an integer number (28576233).

Almost surely, 2^112188121 is an apocalyptic number.

It is an amenable number.

112188121 is a deficient number, since it is larger than the sum of its proper divisors (2116811).

112188121 is an equidigital number, since it uses as much as digits as its factorization.

112188121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2116810.

The product of its digits is 256, while the sum is 25.

The square root of 112188121 is about 10591.8893970811. The cubic root of 112188121 is about 482.2981818583.

The spelling of 112188121 in words is "one hundred twelve million, one hundred eighty-eight thousand, one hundred twenty-one".