112001209 has 2 divisors, whose sum is σ = 112001210. Its totient is φ = 112001208.

The previous prime is 112001207. The next prime is 112001231. The reversal of 112001209 is 902100211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108743184 + 3258025 = 10428^2 + 1805^2 .

It is a cyclic number.

It is not a de Polignac number, because 112001209 - 2¹ = 112001207 is a prime.

Together with 112001207, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 112001192 and 112001201.

It is not a weakly prime, because it can be changed into another prime (112001207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56000604 + 56000605.

It is an arithmetic number, because the mean of its divisors is an integer number (56000605).

Almost surely, 2^112001209 is an apocalyptic number.

It is an amenable number.

112001209 is a deficient number, since it is larger than the sum of its proper divisors (1).

112001209 is an equidigital number, since it uses as much as digits as its factorization.

112001209 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 16.

The square root of 112001209 is about 10583.0623639852. The cubic root of 112001209 is about 482.0301872705.

The spelling of 112001209 in words is "one hundred twelve million, one thousand, two hundred nine".