2162105123 has 2 divisors, whose sum is σ = 2162105124. Its totient is φ = 2162105122.

The previous prime is 2162105083. The next prime is 2162105129. The reversal of 2162105123 is 3215012612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2162105123 - 2¹⁶ = 2162039587 is a prime.

It is not a weakly prime, because it can be changed into another prime (2162105129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1081052561 + 1081052562.

It is an arithmetic number, because the mean of its divisors is an integer number (1081052562).

Almost surely, 2^2162105123 is an apocalyptic number.

2162105123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2162105123 is an equidigital number, since it uses as much as digits as its factorization.

2162105123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 2162105123 is about 46498.4421567003. The cubic root of 2162105123 is about 1293.0806174858.

Adding to 2162105123 its reverse (3215012612), we get a palindrome (5377117735).

The spelling of 2162105123 in words is "two billion, one hundred sixty-two million, one hundred five thousand, one hundred twenty-three".