2105011155 has 16 divisors (see below), whose sum is σ = 3627096480. Its totient is φ = 1036313088.

The previous prime is 2105011133. The next prime is 2105011163. The reversal of 2105011155 is 5511105012.

It is not a de Polignac number, because 2105011155 - 2⁶ = 2105011091 is a prime.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 5397270 + ... + 5397659.

It is an arithmetic number, because the mean of its divisors is an integer number (226693530).

Almost surely, 2^2105011155 is an apocalyptic number.

2105011155 is a deficient number, since it is larger than the sum of its proper divisors (1522085325).

2105011155 is a wasteful number, since it uses less digits than its factorization.

2105011155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10794950.

The product of its (nonzero) digits is 250, while the sum is 21.

The square root of 2105011155 is about 45880.4005540492. The cubic root of 2105011155 is about 1281.5969559524.

Adding to 2105011155 its reverse (5511105012), we get a palindrome (7616116167).

The spelling of 2105011155 in words is "two billion, one hundred five million, eleven thousand, one hundred fifty-five".