217217252454712 has 32 divisors (see below), whose sum is σ = 411868077577200. Its totient is φ = 107385821534464.

The previous prime is 217217252454617. The next prime is 217217252454737. The reversal of 217217252454712 is 217454252712712.

It is a super-2 number, since 2×217217252454712² (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 217217252454712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27478803 + ... + 34489405.

Almost surely, 2^{217217252454712} is an apocalyptic number.

It is an amenable number.

217217252454712 is a deficient number, since it is larger than the sum of its proper divisors (194650825122488).

217217252454712 is a wasteful number, since it uses less digits than its factorization.

217217252454712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7054215 (or 7054211 counting only the distinct ones).

The product of its digits is 4390400, while the sum is 52.

The spelling of 217217252454712 in words is "two hundred seventeen trillion, two hundred seventeen billion, two hundred fifty-two million, four hundred fifty-four thousand, seven hundred twelve".