2162172113 has 2 divisors, whose sum is σ = 2162172114. Its totient is φ = 2162172112.

The previous prime is 2162172107. The next prime is 2162172151. The reversal of 2162172113 is 3112712612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1969850689 + 192321424 = 44383^2 + 13868^2 .

It is a cyclic number.

It is not a de Polignac number, because 2162172113 - 2⁸ = 2162171857 is a prime.

It is not a weakly prime, because it can be changed into another prime (2162172163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1081086056 + 1081086057.

It is an arithmetic number, because the mean of its divisors is an integer number (1081086057).

Almost surely, 2^2162172113 is an apocalyptic number.

It is an amenable number.

2162172113 is a deficient number, since it is larger than the sum of its proper divisors (1).

2162172113 is an equidigital number, since it uses as much as digits as its factorization.

2162172113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 26.

The square root of 2162172113 is about 46499.1624978343. The cubic root of 2162172113 is about 1293.0939721519.

Adding to 2162172113 its reverse (3112712612), we get a palindrome (5274884725).

The spelling of 2162172113 in words is "two billion, one hundred sixty-two million, one hundred seventy-two thousand, one hundred thirteen".