2123115055 has 4 divisors (see below), whose sum is σ = 2547738072. Its totient is φ = 1698492040.

The previous prime is 2123115053. The next prime is 2123115061. The reversal of 2123115055 is 5505113212.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2123115055 - 2¹ = 2123115053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123115053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212311501 + ... + 212311510.

It is an arithmetic number, because the mean of its divisors is an integer number (636934518).

Almost surely, 2^2123115055 is an apocalyptic number.

2123115055 is a deficient number, since it is larger than the sum of its proper divisors (424623017).

2123115055 is an equidigital number, since it uses as much as digits as its factorization.

2123115055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424623016.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 2123115055 is about 46077.2726514927. The cubic root of 2123115055 is about 1285.2605476309.

Adding to 2123115055 its reverse (5505113212), we get a palindrome (7628228267).

The spelling of 2123115055 in words is "two billion, one hundred twenty-three million, one hundred fifteen thousand, fifty-five".