12011201309 has 8 divisors (see below), whose sum is σ = 12303077952. Its totient is φ = 11719895040.

The previous prime is 12011201303. The next prime is 12011201351. The reversal of 12011201309 is 90310211021.

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 12011201309 - 2¹² = 12011197213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011201303) 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 7 ways as a sum of consecutive naturals, for example, 99812 + ... + 184349.

It is an arithmetic number, because the mean of its divisors is an integer number (1537884744).

Almost surely, 2^12011201309 is an apocalyptic number.

It is an amenable number.

12011201309 is a deficient number, since it is larger than the sum of its proper divisors (291876643).

12011201309 is an equidigital number, since it uses as much as digits as its factorization.

12011201309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285187.

The product of its (nonzero) digits is 108, while the sum is 20.

The spelling of 12011201309 in words is "twelve billion, eleven million, two hundred one thousand, three hundred nine".