12120011121209 has 8 divisors (see below), whose sum is σ = 12418202552448. Its totient is φ = 11823499642320.

The previous prime is 12120011121199. The next prime is 12120011121221. The reversal of 12120011121209 is 90212111002121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12120011121209 - 2⁴ = 12120011121193 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12120011121109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 419973482 + ... + 420002339.

It is an arithmetic number, because the mean of its divisors is an integer number (1552275319056).

Almost surely, 2^{12120011121209} is an apocalyptic number.

It is an amenable number.

12120011121209 is a deficient number, since it is larger than the sum of its proper divisors (298191431239).

12120011121209 is an equidigital number, since it uses as much as digits as its factorization.

12120011121209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839976175.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 12120011121209 in words is "twelve trillion, one hundred twenty billion, eleven million, one hundred twenty-one thousand, two hundred nine".