12100201021009 has 2 divisors, whose sum is σ = 12100201021010. Its totient is φ = 12100201021008.

The previous prime is 12100201020997. The next prime is 12100201021049. The reversal of 12100201021009 is 90012010200121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11616870172609 + 483330848400 = 3408353^2 + 695220^2 .

It is a cyclic number.

It is not a de Polignac number, because 12100201021009 - 2⁵ = 12100201020977 is a prime.

It is not a weakly prime, because it can be changed into another prime (12100201021049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050100510504 + 6050100510505.

It is an arithmetic number, because the mean of its divisors is an integer number (6050100510505).

Almost surely, 2^{12100201021009} is an apocalyptic number.

It is an amenable number.

12100201021009 is a deficient number, since it is larger than the sum of its proper divisors (1).

12100201021009 is an equidigital number, since it uses as much as digits as its factorization.

12100201021009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 12100201021009 in words is "twelve trillion, one hundred billion, two hundred one million, twenty-one thousand, nine".