10215221065 has 16 divisors (see below), whose sum is σ = 14011251840. Its totient is φ = 7003820160.

The previous prime is 10215221041. The next prime is 10215221077. The reversal of 10215221065 is 56012251201.

It is not a de Polignac number, because 10215221065 - 2⁵ = 10215221033 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 369525 + ... + 396205.

It is an arithmetic number, because the mean of its divisors is an integer number (875703240).

Almost surely, 2^10215221065 is an apocalyptic number.

It is an amenable number.

10215221065 is a deficient number, since it is larger than the sum of its proper divisors (3796030775).

10215221065 is a wasteful number, since it uses less digits than its factorization.

10215221065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37632.

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 10215221065 its reverse (56012251201), we get a palindrome (66227472266).

The spelling of 10215221065 in words is "ten billion, two hundred fifteen million, two hundred twenty-one thousand, sixty-five".