2120120123 has 4 divisors (see below), whose sum is σ = 2312858328. Its totient is φ = 1927381920.

The previous prime is 2120120071. The next prime is 2120120147. The reversal of 2120120123 is 3210210212.

It is a happy number.

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 2120120123 - 2²⁴ = 2103342907 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2120120098 and 2120120107.

It is not an unprimeable number, because it can be changed into a prime (2120120153) 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, 96369086 + ... + 96369107.

It is an arithmetic number, because the mean of its divisors is an integer number (578214582).

Almost surely, 2^2120120123 is an apocalyptic number.

2120120123 is a deficient number, since it is larger than the sum of its proper divisors (192738205).

2120120123 is a wasteful number, since it uses less digits than its factorization.

2120120123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192738204.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2120120123 is about 46044.7621668307. The cubic root of 2120120123 is about 1284.6559204317.

Adding to 2120120123 its reverse (3210210212), we get a palindrome (5330330335).

The spelling of 2120120123 in words is "two billion, one hundred twenty million, one hundred twenty thousand, one hundred twenty-three".