2103121103 has 2 divisors, whose sum is σ = 2103121104. Its totient is φ = 2103121102.

The previous prime is 2103121087. The next prime is 2103121121. The reversal of 2103121103 is 3011213012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2103121103 - 2⁴ = 2103121087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2103121133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051560551 + 1051560552.

It is an arithmetic number, because the mean of its divisors is an integer number (1051560552).

Almost surely, 2^2103121103 is an apocalyptic number.

2103121103 is a deficient number, since it is larger than the sum of its proper divisors (1).

2103121103 is an equidigital number, since it uses as much as digits as its factorization.

2103121103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 2103121103 is about 45859.7983314362. The cubic root of 2103121103 is about 1281.2132667383.

Adding to 2103121103 its reverse (3011213012), we get a palindrome (5114334115).

The spelling of 2103121103 in words is "two billion, one hundred three million, one hundred twenty-one thousand, one hundred three".