2215663222515 has 16 divisors (see below), whose sum is σ = 3566810001408. Its totient is φ = 1174437436896.

The previous prime is 2215663222511. The next prime is 2215663222517. The reversal of 2215663222515 is 5152223665122.

It is not a de Polignac number, because 2215663222515 - 2² = 2215663222511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2215663222511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 453098419 + ... + 453103308.

It is an arithmetic number, because the mean of its divisors is an integer number (222925625088).

Almost surely, 2^{2215663222515} is an apocalyptic number.

2215663222515 is a deficient number, since it is larger than the sum of its proper divisors (1351146778893).

2215663222515 is a wasteful number, since it uses less digits than its factorization.

2215663222515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906201898.

The product of its digits is 432000, while the sum is 42.

Adding to 2215663222515 its reverse (5152223665122), we get a palindrome (7367886887637).

The spelling of 2215663222515 in words is "two trillion, two hundred fifteen billion, six hundred sixty-three million, two hundred twenty-two thousand, five hundred fifteen".