2162105105 has 4 divisors (see below), whose sum is σ = 2594526132. Its totient is φ = 1729684080.

The previous prime is 2162105083. The next prime is 2162105123. The reversal of 2162105105 is 5015012612.

It is a happy number.

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 332661121 + 1829443984 = 18239^2 + 42772^2 .

It is not a de Polignac number, because 2162105105 - 2⁸ = 2162104849 is a prime.

It is a super-2 number, since 2×2162105105² = 9349396970134122050, 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, 216210506 + ... + 216210515.

It is an arithmetic number, because the mean of its divisors is an integer number (648631533).

Almost surely, 2^2162105105 is an apocalyptic number.

It is an amenable number.

2162105105 is a deficient number, since it is larger than the sum of its proper divisors (432421027).

2162105105 is an equidigital number, since it uses as much as digits as its factorization.

2162105105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432421026.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 2162105105 is about 46498.4419631454. The cubic root of 2162105105 is about 1293.0806138974.

Adding to 2162105105 its reverse (5015012612), we get a palindrome (7177117717).

The spelling of 2162105105 in words is "two billion, one hundred sixty-two million, one hundred five thousand, one hundred five".