12000120012209 has 4 divisors (see below), whose sum is σ = 13714422871104. Its totient is φ = 10285817153316.

The previous prime is 12000120012193. The next prime is 12000120012217. The reversal of 12000120012209 is 90221002100021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12000120012209 - 2⁴ = 12000120012193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12000120012239) 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, 857151429437 + ... + 857151429450.

It is an arithmetic number, because the mean of its divisors is an integer number (3428605717776).

Almost surely, 2^{12000120012209} is an apocalyptic number.

It is an amenable number.

12000120012209 is a deficient number, since it is larger than the sum of its proper divisors (1714302858895).

12000120012209 is an equidigital number, since it uses as much as digits as its factorization.

12000120012209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1714302858894.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 12000120012209 in words is "twelve trillion, one hundred twenty million, twelve thousand, two hundred nine".