2105552111 has 4 divisors (see below), whose sum is σ = 2267517672. Its totient is φ = 1943586552.

The previous prime is 2105552093. The next prime is 2105552129. The reversal of 2105552111 is 1112555012.

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

It is an interprime number because it is at equal distance from previous prime (2105552093) and next prime (2105552129).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2105552111 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 (2105551111) 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, 80982761 + ... + 80982786.

It is an arithmetic number, because the mean of its divisors is an integer number (566879418).

Almost surely, 2^2105552111 is an apocalyptic number.

2105552111 is a deficient number, since it is larger than the sum of its proper divisors (161965561).

2105552111 is a wasteful number, since it uses less digits than its factorization.

2105552111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161965560.

The product of its (nonzero) digits is 500, while the sum is 23.

The square root of 2105552111 is about 45886.2954595378. The cubic root of 2105552111 is about 1281.7067302215.

The spelling of 2105552111 in words is "two billion, one hundred five million, five hundred fifty-two thousand, one hundred eleven".