2120023123 has 2 divisors, whose sum is σ = 2120023124. Its totient is φ = 2120023122.

The previous prime is 2120023117. The next prime is 2120023141. The reversal of 2120023123 is 3213200212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2120023123 - 2¹³ = 2120014931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2120023097 and 2120023106.

It is not a weakly prime, because it can be changed into another prime (2120023153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060011561 + 1060011562.

It is an arithmetic number, because the mean of its divisors is an integer number (1060011562).

Almost surely, 2^2120023123 is an apocalyptic number.

2120023123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120023123 is an equidigital number, since it uses as much as digits as its factorization.

2120023123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2120023123 is about 46043.7088319349. The cubic root of 2120023123 is about 1284.6363282203.

Adding to 2120023123 its reverse (3213200212), we get a palindrome (5333223335).

The spelling of 2120023123 in words is "two billion, one hundred twenty million, twenty-three thousand, one hundred twenty-three".