12021231310009 has 4 divisors (see below), whose sum is σ = 12027007972980. Its totient is φ = 12015454647040.

The previous prime is 12021231309883. The next prime is 12021231310013. The reversal of 12021231310009 is 90001313212021.

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 9560185722025 + 2461045587984 = 3091955^2 + 1568772^2 .

It is a cyclic number.

It is not a de Polignac number, because 12021231310009 - 2¹⁹ = 12021230785721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12021231316009) 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, 2888328364 + ... + 2888332525.

It is an arithmetic number, because the mean of its divisors is an integer number (3006751993245).

Almost surely, 2^{12021231310009} is an apocalyptic number.

It is an amenable number.

12021231310009 is a deficient number, since it is larger than the sum of its proper divisors (5776662971).

12021231310009 is an equidigital number, since it uses as much as digits as its factorization.

12021231310009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5776662970.

The product of its (nonzero) digits is 648, while the sum is 25.

The spelling of 12021231310009 in words is "twelve trillion, twenty-one billion, two hundred thirty-one million, three hundred ten thousand, nine".