2171140105 has 4 divisors (see below), whose sum is σ = 2605368132. Its totient is φ = 1736912080.

The previous prime is 2171140033. The next prime is 2171140151. The reversal of 2171140105 is 5010411712.

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

It can be written as a sum of positive squares in 2 ways, for example, as 249545209 + 1921594896 = 15797^2 + 43836^2 .

It is not a de Polignac number, because 2171140105 - 2⁷ = 2171139977 is a prime.

It is a super-2 number, since 2×2171140105² = 9427698711078822050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217114006 + ... + 217114015.

It is an arithmetic number, because the mean of its divisors is an integer number (651342033).

Almost surely, 2^2171140105 is an apocalyptic number.

It is an amenable number.

2171140105 is a deficient number, since it is larger than the sum of its proper divisors (434228027).

2171140105 is an equidigital number, since it uses as much as digits as its factorization.

2171140105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434228026.

The product of its (nonzero) digits is 280, while the sum is 22.

The square root of 2171140105 is about 46595.4944710323. The cubic root of 2171140105 is about 1294.8792849220.

Adding to 2171140105 its reverse (5010411712), we get a palindrome (7181551817).

It can be divided in two parts, 21711 and 40105, that added together give a palindrome (61816).

The spelling of 2171140105 in words is "two billion, one hundred seventy-one million, one hundred forty thousand, one hundred five".