2177042113 has 4 divisors (see below), whose sum is σ = 2177137620. Its totient is φ = 2176946608.

The previous prime is 2177042041. The next prime is 2177042137. The reversal of 2177042113 is 3112407712.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1449553329 + 727488784 = 38073^2 + 26972^2 .

It is a cyclic number.

It is not a de Polignac number, because 2177042113 - 2¹³ = 2177033921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2177042143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8631 + ... + 66547.

It is an arithmetic number, because the mean of its divisors is an integer number (544284405).

Almost surely, 2^2177042113 is an apocalyptic number.

It is an amenable number.

2177042113 is a deficient number, since it is larger than the sum of its proper divisors (95507).

2177042113 is an equidigital number, since it uses as much as digits as its factorization.

2177042113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95506.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 2177042113 is about 46658.7838782796. The cubic root of 2177042113 is about 1296.0515527888.

Adding to 2177042113 its reverse (3112407712), we get a palindrome (5289449825).

The spelling of 2177042113 in words is "two billion, one hundred seventy-seven million, forty-two thousand, one hundred thirteen".