2215143665105 has 32 divisors (see below), whose sum is σ = 3177979743744. Its totient is φ = 1449254163456.

The previous prime is 2215143665093. The next prime is 2215143665123. The reversal of 2215143665105 is 5015663415122.

It is a cyclic number.

It is not a de Polignac number, because 2215143665105 - 2²⁰ = 2215142616529 is a prime.

It is a super-2 number, since 2×2215143665105² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3146072 + ... + 3785241.

It is an arithmetic number, because the mean of its divisors is an integer number (99311866992).

Almost surely, 2^{2215143665105} is an apocalyptic number.

It is an amenable number.

2215143665105 is a deficient number, since it is larger than the sum of its proper divisors (962836078639).

2215143665105 is a wasteful number, since it uses less digits than its factorization.

2215143665105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6931745.

The product of its (nonzero) digits is 216000, while the sum is 41.

The spelling of 2215143665105 in words is "two trillion, two hundred fifteen billion, one hundred forty-three million, six hundred sixty-five thousand, one hundred five".