1218084471217 has 8 divisors (see below), whose sum is σ = 1221836011200. Its totient is φ = 1214336953104.

The previous prime is 1218084471203. The next prime is 1218084471221. The reversal of 1218084471217 is 7121744808121.

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 1218084471217 - 2⁷ = 1218084471089 is a prime.

It is a super-2 number, since 2×1218084471217² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1218084471017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398242 + ... + 1610827.

It is an arithmetic number, because the mean of its divisors is an integer number (152729501400).

Almost surely, 2^{1218084471217} is an apocalyptic number.

It is an amenable number.

1218084471217 is a deficient number, since it is larger than the sum of its proper divisors (3751539983).

1218084471217 is a wasteful number, since it uses less digits than its factorization.

1218084471217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2010935.

The product of its (nonzero) digits is 200704, while the sum is 46.

The spelling of 1218084471217 in words is "one trillion, two hundred eighteen billion, eighty-four million, four hundred seventy-one thousand, two hundred seventeen".