12010112209 has 4 divisors (see below), whose sum is σ = 12145057380. Its totient is φ = 11875167040.

The previous prime is 12010112207. The next prime is 12010112263. The reversal of 12010112209 is 90221101021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90221101021 = 29 ⋅3111072449.

It can be written as a sum of positive squares in 2 ways, for example, as 3380259600 + 8629852609 = 58140^2 + 92897^2 .

It is a cyclic number.

It is not a de Polignac number, because 12010112209 - 2¹ = 12010112207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12010112203) 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 3 ways as a sum of consecutive naturals, for example, 67472452 + ... + 67472629.

It is an arithmetic number, because the mean of its divisors is an integer number (3036264345).

Almost surely, 2^12010112209 is an apocalyptic number.

It is an amenable number.

12010112209 is a deficient number, since it is larger than the sum of its proper divisors (134945171).

12010112209 is an equidigital number, since it uses as much as digits as its factorization.

12010112209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134945170.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 12010112209 in words is "twelve billion, ten million, one hundred twelve thousand, two hundred nine".