2105502081 has 8 divisors (see below), whose sum is σ = 2955090720. Its totient is φ = 1329790752.

The previous prime is 2105502059. The next prime is 2105502101. The reversal of 2105502081 is 1802055012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2105502081 - 2¹⁸ = 2105239937 is a prime.

It is a super-2 number, since 2×2105502081² = 8866278026190661122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2105502481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18469260 + ... + 18469373.

It is an arithmetic number, because the mean of its divisors is an integer number (369386340).

Almost surely, 2^2105502081 is an apocalyptic number.

It is an amenable number.

2105502081 is a deficient number, since it is larger than the sum of its proper divisors (849588639).

2105502081 is a wasteful number, since it uses less digits than its factorization.

2105502081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36938655.

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 2105502081 is about 45885.7503044246. The cubic root of 2105502081 is about 1281.6965786014.

Adding to 2105502081 its reverse (1802055012), we get a palindrome (3907557093).

The spelling of 2105502081 in words is "two billion, one hundred five million, five hundred two thousand, eighty-one".