120110002009 has 4 divisors (see below), whose sum is σ = 122376228516. Its totient is φ = 117843775504.

The previous prime is 120110001959. The next prime is 120110002037. The reversal of 120110002009 is 900200011021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 900200011021 = 347 ⋅2594236343.

It can be written as a sum of positive squares in 2 ways, for example, as 47086830025 + 73023171984 = 216995^2 + 270228^2 .

It is a cyclic number.

It is not a de Polignac number, because 120110002009 - 2²⁵ = 120076447577 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120110001983 and 120110002001.

It is not an unprimeable number, because it can be changed into a prime (120110002079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1133113174 + ... + 1133113279.

It is an arithmetic number, because the mean of its divisors is an integer number (30594057129).

Almost surely, 2^120110002009 is an apocalyptic number.

It is an amenable number.

120110002009 is a deficient number, since it is larger than the sum of its proper divisors (2266226507).

120110002009 is an equidigital number, since it uses as much as digits as its factorization.

120110002009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2266226506.

The product of its (nonzero) digits is 36, while the sum is 16.

The spelling of 120110002009 in words is "one hundred twenty billion, one hundred ten million, two thousand, nine".