2102144123 has 2 divisors, whose sum is σ = 2102144124. Its totient is φ = 2102144122.

The previous prime is 2102144113. The next prime is 2102144147. The reversal of 2102144123 is 3214412012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2102144123 - 2⁸ = 2102143867 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2102144095 and 2102144104.

It is not a weakly prime, because it can be changed into another prime (2102144113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051072061 + 1051072062.

It is an arithmetic number, because the mean of its divisors is an integer number (1051072062).

Almost surely, 2^2102144123 is an apocalyptic number.

2102144123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102144123 is an equidigital number, since it uses as much as digits as its factorization.

2102144123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2102144123 is about 45849.1452810191. The cubic root of 2102144123 is about 1281.0148451940.

Adding to 2102144123 its reverse (3214412012), we get a palindrome (5316556135).

The spelling of 2102144123 in words is "two billion, one hundred two million, one hundred forty-four thousand, one hundred twenty-three".