120100212109 has 2 divisors, whose sum is σ = 120100212110. Its totient is φ = 120100212108.

The previous prime is 120100212107. The next prime is 120100212163. The reversal of 120100212109 is 901212001021.

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., 105933975625 + 14166236484 = 325475^2 + 119022^2 .

It is a cyclic number.

It is not a de Polignac number, because 120100212109 - 2¹ = 120100212107 is a prime.

Together with 120100212107, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120100212107) 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, 60050106054 + 60050106055.

It is an arithmetic number, because the mean of its divisors is an integer number (60050106055).

Almost surely, 2^120100212109 is an apocalyptic number.

It is an amenable number.

120100212109 is a deficient number, since it is larger than the sum of its proper divisors (1).

120100212109 is an equidigital number, since it uses as much as digits as its factorization.

120100212109 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 120100212109 in words is "one hundred twenty billion, one hundred million, two hundred twelve thousand, one hundred nine".