2159612123 has 2 divisors, whose sum is σ = 2159612124. Its totient is φ = 2159612122.

The previous prime is 2159612089. The next prime is 2159612167. The reversal of 2159612123 is 3212169512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2159612123 - 2²⁸ = 1891176667 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2159612123.

It is not a weakly prime, because it can be changed into another prime (2159612723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1079806061 + 1079806062.

It is an arithmetic number, because the mean of its divisors is an integer number (1079806062).

Almost surely, 2^2159612123 is an apocalyptic number.

2159612123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2159612123 is an equidigital number, since it uses as much as digits as its factorization.

2159612123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 32.

The square root of 2159612123 is about 46471.6270750229. The cubic root of 2159612123 is about 1292.5834338627.

The spelling of 2159612123 in words is "two billion, one hundred fifty-nine million, six hundred twelve thousand, one hundred twenty-three".