112112009 has 2 divisors, whose sum is σ = 112112010. Its totient is φ = 112112008.

The previous prime is 112112003. The next prime is 112112069. The reversal of 112112009 is 900211211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109662784 + 2449225 = 10472^2 + 1565^2 .

It is a cyclic number.

It is not a de Polignac number, because 112112009 - 2¹² = 112107913 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (112112003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56056004 + 56056005.

It is an arithmetic number, because the mean of its divisors is an integer number (56056005).

Almost surely, 2^112112009 is an apocalyptic number.

It is an amenable number.

112112009 is a deficient number, since it is larger than the sum of its proper divisors (1).

112112009 is an equidigital number, since it uses as much as digits as its factorization.

112112009 is an evil number, because the sum of its binary digits is even.

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

The square root of 112112009 is about 10588.2958496634. The cubic root of 112112009 is about 482.1890883599.

The spelling of 112112009 in words is "one hundred twelve million, one hundred twelve thousand, nine".