2143111105 has 8 divisors (see below), whose sum is σ = 2594492712. Its totient is φ = 1699315968.

The previous prime is 2143111093. The next prime is 2143111121. The reversal of 2143111105 is 5011113412.

It can be written as a sum of positive squares in 4 ways, for example, as 274796929 + 1868314176 = 16577^2 + 43224^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2143111105 - 2²⁹ = 1606240193 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1895994 + ... + 1897123.

It is an arithmetic number, because the mean of its divisors is an integer number (324311589).

Almost surely, 2^2143111105 is an apocalyptic number.

It is an amenable number.

2143111105 is a deficient number, since it is larger than the sum of its proper divisors (451381607).

2143111105 is a wasteful number, since it uses less digits than its factorization.

2143111105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3793235.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 2143111105 is about 46293.7480120156. The cubic root of 2143111105 is about 1289.2829187736.

Adding to 2143111105 its reverse (5011113412), we get a palindrome (7154224517).

The spelling of 2143111105 in words is "two billion, one hundred forty-three million, one hundred eleven thousand, one hundred five".