12021100219109 has 2 divisors, whose sum is σ = 12021100219110. Its totient is φ = 12021100219108.

The previous prime is 12021100219097. The next prime is 12021100219111. The reversal of 12021100219109 is 90191200112021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7232049427009 + 4789050792100 = 2689247^2 + 2188390^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12021100219109 is a prime.

Together with 12021100219111, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12021100219169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010550109554 + 6010550109555.

It is an arithmetic number, because the mean of its divisors is an integer number (6010550109555).

Almost surely, 2^{12021100219109} is an apocalyptic number.

It is an amenable number.

12021100219109 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021100219109 is an equidigital number, since it uses as much as digits as its factorization.

12021100219109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 29.

The spelling of 12021100219109 in words is "twelve trillion, twenty-one billion, one hundred million, two hundred nineteen thousand, one hundred nine".