112120109 has 2 divisors, whose sum is σ = 112120110. Its totient is φ = 112120108.

The previous prime is 112120103. The next prime is 112120111. The reversal of 112120109 is 901021211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99940009 + 12180100 = 9997^2 + 3490^2 .

It is a cyclic number.

It is not a de Polignac number, because 112120109 - 2⁴ = 112120093 is a prime.

Together with 112120111, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112120103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56060054 + 56060055.

It is an arithmetic number, because the mean of its divisors is an integer number (56060055).

Almost surely, 2^112120109 is an apocalyptic number.

It is an amenable number.

112120109 is a deficient number, since it is larger than the sum of its proper divisors (1).

112120109 is an equidigital number, since it uses as much as digits as its factorization.

112120109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 17.

The square root of 112120109 is about 10588.6783405673. The cubic root of 112120109 is about 482.2007006679.

The spelling of 112120109 in words is "one hundred twelve million, one hundred twenty thousand, one hundred nine".