12020212120109 has 2 divisors, whose sum is σ = 12020212120110. Its totient is φ = 12020212120108.

The previous prime is 12020212120069. The next prime is 12020212120153. The reversal of 12020212120109 is 90102121202021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9288761776009 + 2731450344100 = 3047747^2 + 1652710^2 .

It is a cyclic number.

It is not a de Polignac number, because 12020212120109 - 2²⁸ = 12019943684653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12020212129109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010106060054 + 6010106060055.

It is an arithmetic number, because the mean of its divisors is an integer number (6010106060055).

Almost surely, 2^{12020212120109} is an apocalyptic number.

It is an amenable number.

12020212120109 is a deficient number, since it is larger than the sum of its proper divisors (1).

12020212120109 is an equidigital number, since it uses as much as digits as its factorization.

12020212120109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 12020212120109 in words is "twelve trillion, twenty billion, two hundred twelve million, one hundred twenty thousand, one hundred nine".