12020211202009 has 4 divisors (see below), whose sum is σ = 12727282449204. Its totient is φ = 11313139954816.

The previous prime is 12020211201967. The next prime is 12020211202061. The reversal of 12020211202009 is 90020211202021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5091918614784 + 6928292587225 = 2256528^2 + 2632165^2 .

It is a cyclic number.

It is not a de Polignac number, because 12020211202009 - 2¹³ = 12020211193817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12020211292009) 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, 353535623572 + ... + 353535623605.

It is an arithmetic number, because the mean of its divisors is an integer number (3181820612301).

Almost surely, 2^{12020211202009} is an apocalyptic number.

It is an amenable number.

12020211202009 is a deficient number, since it is larger than the sum of its proper divisors (707071247195).

12020211202009 is an equidigital number, since it uses as much as digits as its factorization.

12020211202009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707071247194.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 12020211202009 in words is "twelve trillion, twenty billion, two hundred eleven million, two hundred two thousand, nine".