11662215122217 has 8 divisors (see below), whose sum is σ = 16963221996000. Its totient is φ = 7068009164960.

The previous prime is 11662215122179. The next prime is 11662215122279. The reversal of 11662215122217 is 71222151226611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11662215122217 - 2⁶ = 11662215122153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11662215122297) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 176700229092 + ... + 176700229157.

It is an arithmetic number, because the mean of its divisors is an integer number (2120402749500).

Almost surely, 2^{11662215122217} is an apocalyptic number.

It is an amenable number.

11662215122217 is a deficient number, since it is larger than the sum of its proper divisors (5301006873783).

11662215122217 is a wasteful number, since it uses less digits than its factorization.

11662215122217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353400458263.

The product of its digits is 40320, while the sum is 39.

Adding to 11662215122217 its reverse (71222151226611), we get a palindrome (82884366348828).

The spelling of 11662215122217 in words is "eleven trillion, six hundred sixty-two billion, two hundred fifteen million, one hundred twenty-two thousand, two hundred seventeen".