12100211789 has 2 divisors, whose sum is σ = 12100211790. Its totient is φ = 12100211788.

The previous prime is 12100211759. The next prime is 12100211791. The reversal of 12100211789 is 98711200121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11740806025 + 359405764 = 108355^2 + 18958^2 .

It is an emirp because it is prime and its reverse (98711200121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12100211789 - 2²⁰ = 12099163213 is a prime.

It is a Sophie Germain prime.

Together with 12100211791, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12100211759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050105894 + 6050105895.

It is an arithmetic number, because the mean of its divisors is an integer number (6050105895).

Almost surely, 2^12100211789 is an apocalyptic number.

It is an amenable number.

12100211789 is a deficient number, since it is larger than the sum of its proper divisors (1).

12100211789 is an equidigital number, since it uses as much as digits as its factorization.

12100211789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 32.

The spelling of 12100211789 in words is "twelve billion, one hundred million, two hundred eleven thousand, seven hundred eighty-nine".