2105234121103 has 2 divisors, whose sum is σ = 2105234121104. Its totient is φ = 2105234121102.

The previous prime is 2105234121091. The next prime is 2105234121149. The reversal of 2105234121103 is 3011214325012.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2105234121103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2105234121173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052617060551 + 1052617060552.

It is an arithmetic number, because the mean of its divisors is an integer number (1052617060552).

Almost surely, 2^{2105234121103} is an apocalyptic number.

2105234121103 is a deficient number, since it is larger than the sum of its proper divisors (1).

2105234121103 is an equidigital number, since it uses as much as digits as its factorization.

2105234121103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 2105234121103 its reverse (3011214325012), we get a palindrome (5116448446115).

The spelling of 2105234121103 in words is "two trillion, one hundred five billion, two hundred thirty-four million, one hundred twenty-one thousand, one hundred three".