1210000120109 has 32 divisors (see below), whose sum is σ = 1376538209280. Its totient is φ = 1053619200000.

The previous prime is 1210000120099. The next prime is 1210000120157. The reversal of 1210000120109 is 9010210000121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1210000120109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210000122109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 185323757 + ... + 185330285.

It is an arithmetic number, because the mean of its divisors is an integer number (43016819040).

Almost surely, 2^{1210000120109} is an apocalyptic number.

It is an amenable number.

1210000120109 is a deficient number, since it is larger than the sum of its proper divisors (166538089171).

1210000120109 is a wasteful number, since it uses less digits than its factorization.

1210000120109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12053.

The product of its (nonzero) digits is 36, while the sum is 17.

The spelling of 1210000120109 in words is "one trillion, two hundred ten billion, one hundred twenty thousand, one hundred nine".