2120310123 has 8 divisors (see below), whose sum is σ = 2903487888. Its totient is φ = 1375336224.

The previous prime is 2120310113. The next prime is 2120310167. The reversal of 2120310123 is 3210130212.

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

It is not a de Polignac number, because 2120310123 - 2¹⁰ = 2120309099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2120310113) 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 7 ways as a sum of consecutive naturals, for example, 9550836 + ... + 9551057.

It is an arithmetic number, because the mean of its divisors is an integer number (362935986).

Almost surely, 2^2120310123 is an apocalyptic number.

2120310123 is a deficient number, since it is larger than the sum of its proper divisors (783177765).

2120310123 is a wasteful number, since it uses less digits than its factorization.

2120310123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19101933.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2120310123 is about 46046.8253303091. The cubic root of 2120310123 is about 1284.6942951966.

Adding to 2120310123 its reverse (3210130212), we get a palindrome (5330440335).

The spelling of 2120310123 in words is "two billion, one hundred twenty million, three hundred ten thousand, one hundred twenty-three".