2171040105 has 16 divisors (see below), whose sum is σ = 3740869440. Its totient is φ = 1068819648.

The previous prime is 2171040071. The next prime is 2171040107. The reversal of 2171040105 is 5010401712.

It is a happy number.

It is not a de Polignac number, because 2171040105 - 2⁶ = 2171040041 is a prime.

It is a super-2 number, since 2×2171040105² = 9426830275036822050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2171040107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5566575 + ... + 5566964.

It is an arithmetic number, because the mean of its divisors is an integer number (233804340).

Almost surely, 2^2171040105 is an apocalyptic number.

It is an amenable number.

2171040105 is a deficient number, since it is larger than the sum of its proper divisors (1569829335).

2171040105 is a wasteful number, since it uses less digits than its factorization.

2171040105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11133560.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 2171040105 is about 46594.4213935531. The cubic root of 2171040105 is about 1294.8594044429.

Adding to 2171040105 its reverse (5010401712), we get a palindrome (7181441817).

The spelling of 2171040105 in words is "two billion, one hundred seventy-one million, forty thousand, one hundred five".