2120324123 has 4 divisors (see below), whose sum is σ = 2156261880. Its totient is φ = 2084386368.

The previous prime is 2120324117. The next prime is 2120324137. The reversal of 2120324123 is 3214230212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2120324123 - 2¹⁰ = 2120323099 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2120324095 and 2120324104.

It is not an unprimeable number, because it can be changed into a prime (2120323123) 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, 17968790 + ... + 17968907.

It is an arithmetic number, because the mean of its divisors is an integer number (539065470).

Almost surely, 2^2120324123 is an apocalyptic number.

2120324123 is a deficient number, since it is larger than the sum of its proper divisors (35937757).

2120324123 is an equidigital number, since it uses as much as digits as its factorization.

2120324123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35937756.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2120324123 is about 46046.9773492246. The cubic root of 2120324123 is about 1284.6971227201.

Adding to 2120324123 its reverse (3214230212), we get a palindrome (5334554335).

The spelling of 2120324123 in words is "two billion, one hundred twenty million, three hundred twenty-four thousand, one hundred twenty-three".