12117181215347 has 8 divisors (see below), whose sum is σ = 13091231156640. Its totient is φ = 11149125428160.

The previous prime is 12117181215281. The next prime is 12117181215367. The reversal of 12117181215347 is 74351218171121.

It is a happy number.

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 12117181215347 - 2³⁴ = 12100001346163 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12117181215298 and 12117181215307.

It is not an unprimeable number, because it can be changed into a prime (12117181215367) 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, 1498534322 + ... + 1498542407.

It is an arithmetic number, because the mean of its divisors is an integer number (1636403894580).

Almost surely, 2^{12117181215347} is an apocalyptic number.

12117181215347 is a deficient number, since it is larger than the sum of its proper divisors (974049941293).

12117181215347 is a wasteful number, since it uses less digits than its factorization.

12117181215347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2997077053.

The product of its digits is 94080, while the sum is 44.

Adding to 12117181215347 its reverse (74351218171121), we get a palindrome (86468399386468).

The spelling of 12117181215347 in words is "twelve trillion, one hundred seventeen billion, one hundred eighty-one million, two hundred fifteen thousand, three hundred forty-seven".