102120120109 has 8 divisors (see below), whose sum is σ = 116724431808. Its totient is φ = 87519739200.

The previous prime is 102120120077. The next prime is 102120120127. The reversal of 102120120109 is 901021021201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102120120109 - 2⁵ = 102120120077 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 (102120124109) 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 in 7 ways as a sum of consecutive naturals, for example, 926812 + ... + 1031125.

It is an arithmetic number, because the mean of its divisors is an integer number (14590553976).

Almost surely, 2^102120120109 is an apocalyptic number.

It is an amenable number.

102120120109 is a deficient number, since it is larger than the sum of its proper divisors (14604311699).

102120120109 is an equidigital number, since it uses as much as digits as its factorization.

102120120109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1965395.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 102120120109 in words is "one hundred two billion, one hundred twenty million, one hundred twenty thousand, one hundred nine".