2105522103 has 4 divisors (see below), whose sum is σ = 2807362808. Its totient is φ = 1403681400.

The previous prime is 2105522059. The next prime is 2105522161. The reversal of 2105522103 is 3012255012.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2105522103 - 2²² = 2101327799 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2105522103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105522173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350920348 + ... + 350920353.

It is an arithmetic number, because the mean of its divisors is an integer number (701840702).

Almost surely, 2^2105522103 is an apocalyptic number.

2105522103 is a deficient number, since it is larger than the sum of its proper divisors (701840705).

2105522103 is an equidigital number, since it uses as much as digits as its factorization.

2105522103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701840704.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 2105522103 is about 45885.9684762129. The cubic root of 2105522103 is about 1281.7006412978.

Adding to 2105522103 its reverse (3012255012), we get a palindrome (5117777115).

The spelling of 2105522103 in words is "two billion, one hundred five million, five hundred twenty-two thousand, one hundred three".