2217647081071 has 4 divisors (see below), whose sum is σ = 2219657641632. Its totient is φ = 2215636520512.

The previous prime is 2217647081063. The next prime is 2217647081123. The reversal of 2217647081071 is 1701807467122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2217647081071 - 2³ = 2217647081063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2217647081021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1005278626 + ... + 1005280831.

It is an arithmetic number, because the mean of its divisors is an integer number (554914410408).

Almost surely, 2^{2217647081071} is an apocalyptic number.

2217647081071 is a deficient number, since it is larger than the sum of its proper divisors (2010560561).

2217647081071 is a wasteful number, since it uses less digits than its factorization.

2217647081071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2010560560.

The product of its (nonzero) digits is 263424, while the sum is 46.

The spelling of 2217647081071 in words is "two trillion, two hundred seventeen billion, six hundred forty-seven million, eighty-one thousand, seventy-one".