2105221315 has 16 divisors (see below), whose sum is σ = 2610441216. Its totient is φ = 1628172000.

The previous prime is 2105221297. The next prime is 2105221343. The reversal of 2105221315 is 5131225012.

It is not a de Polignac number, because 2105221315 - 2¹⁹ = 2104697027 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156444 + ... + 169366.

It is an arithmetic number, because the mean of its divisors is an integer number (163152576).

Almost surely, 2^2105221315 is an apocalyptic number.

2105221315 is a deficient number, since it is larger than the sum of its proper divisors (505219901).

2105221315 is a wasteful number, since it uses less digits than its factorization.

2105221315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14010.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 2105221315 is about 45882.6907994725. The cubic root of 2105221315 is about 1281.6396052043.

Adding to 2105221315 its reverse (5131225012), we get a palindrome (7236446327).

The spelling of 2105221315 in words is "two billion, one hundred five million, two hundred twenty-one thousand, three hundred fifteen".