12211020121009 has 16 divisors (see below), whose sum is σ = 12682762142400. Its totient is φ = 11747625488640.

The previous prime is 12211020121007. The next prime is 12211020121049. The reversal of 12211020121009 is 90012102011221.

It is a cyclic number.

It is not a de Polignac number, because 12211020121009 - 2¹ = 12211020121007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12211020121007) 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 15 ways as a sum of consecutive naturals, for example, 14517042 + ... + 15335140.

It is an arithmetic number, because the mean of its divisors is an integer number (792672633900).

Almost surely, 2^{12211020121009} is an apocalyptic number.

It is an amenable number.

12211020121009 is a deficient number, since it is larger than the sum of its proper divisors (471742021391).

12211020121009 is an equidigital number, since it uses as much as digits as its factorization.

12211020121009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823200.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 12211020121009 in words is "twelve trillion, two hundred eleven billion, twenty million, one hundred twenty-one thousand, nine".