2221215315 has 32 divisors (see below), whose sum is σ = 3879242496. Its totient is φ = 1076338560.

The previous prime is 2221215263. The next prime is 2221215323. The reversal of 2221215315 is 5135121222.

It is not a de Polignac number, because 2221215315 - 2⁶ = 2221215251 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 444169 + ... + 449141.

It is an arithmetic number, because the mean of its divisors is an integer number (121226328).

Almost surely, 2^2221215315 is an apocalyptic number.

2221215315 is a deficient number, since it is larger than the sum of its proper divisors (1658027181).

2221215315 is a wasteful number, since it uses less digits than its factorization.

2221215315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7699.

The product of its digits is 1200, while the sum is 24.

The square root of 2221215315 is about 47129.7710051725. The cubic root of 2221215315 is about 1304.7587551885.

Adding to 2221215315 its reverse (5135121222), we get a palindrome (7356336537).

The spelling of 2221215315 in words is "two billion, two hundred twenty-one million, two hundred fifteen thousand, three hundred fifteen".