217146566011012 has 12 divisors (see below), whose sum is σ = 414552535112016. Its totient is φ = 98702984550440.

The previous prime is 217146566010949. The next prime is 217146566011027. The reversal of 217146566011012 is 210110665641712.

It is a super-2 number, since 2×217146566011012² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 217146566011012.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2467574613718 + ... + 2467574613805.

It is an arithmetic number, because the mean of its divisors is an integer number (34546044592668).

Almost surely, 2^{217146566011012} is an apocalyptic number.

217146566011012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

217146566011012 is a deficient number, since it is larger than the sum of its proper divisors (197405969101004).

217146566011012 is a wasteful number, since it uses less digits than its factorization.

217146566011012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4935149227538 (or 4935149227536 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 43.

The spelling of 217146566011012 in words is "two hundred seventeen trillion, one hundred forty-six billion, five hundred sixty-six million, eleven thousand, twelve".