2103511121 has 2 divisors, whose sum is σ = 2103511122. Its totient is φ = 2103511120.

The previous prime is 2103511097. The next prime is 2103511127. The reversal of 2103511121 is 1211153012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2051093521 + 52417600 = 45289^2 + 7240^2 .

It is a cyclic number.

It is not a de Polignac number, because 2103511121 - 2¹⁸ = 2103248977 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2103511121.

It is not a weakly prime, because it can be changed into another prime (2103511127) 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, 1051755560 + 1051755561.

It is an arithmetic number, because the mean of its divisors is an integer number (1051755561).

Almost surely, 2^2103511121 is an apocalyptic number.

It is an amenable number.

2103511121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2103511121 is an equidigital number, since it uses as much as digits as its factorization.

2103511121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 2103511121 is about 45864.0504207816. The cubic root of 2103511121 is about 1281.2924609969.

Adding to 2103511121 its reverse (1211153012), we get a palindrome (3314664133).

The spelling of 2103511121 in words is "two billion, one hundred three million, five hundred eleven thousand, one hundred twenty-one".