12001001221109 has 2 divisors, whose sum is σ = 12001001221110. Its totient is φ = 12001001221108.

The previous prime is 12001001221093. The next prime is 12001001221133. The reversal of 12001001221109 is 90112210010021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11785591990225 + 215409230884 = 3433015^2 + 464122^2 .

It is a cyclic number.

It is not a de Polignac number, because 12001001221109 - 2⁴ = 12001001221093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12001001221159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000500610554 + 6000500610555.

It is an arithmetic number, because the mean of its divisors is an integer number (6000500610555).

Almost surely, 2^{12001001221109} is an apocalyptic number.

It is an amenable number.

12001001221109 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001001221109 is an equidigital number, since it uses as much as digits as its factorization.

12001001221109 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 20.

The spelling of 12001001221109 in words is "twelve trillion, one billion, one million, two hundred twenty-one thousand, one hundred nine".