12227721289918 has 8 divisors (see below), whose sum is σ = 18341683507800. Its totient is φ = 6113826787320.

The previous prime is 12227721289867. The next prime is 12227721289921. The reversal of 12227721289918 is 81998212772221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16474948 + ... + 17201143.

It is an arithmetic number, because the mean of its divisors is an integer number (2292710438475).

Almost surely, 2^{12227721289918} is an apocalyptic number.

12227721289918 is a deficient number, since it is larger than the sum of its proper divisors (6113962217882).

12227721289918 is a wasteful number, since it uses less digits than its factorization.

12227721289918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33857642.

The product of its digits is 8128512, while the sum is 61.

The spelling of 12227721289918 in words is "twelve trillion, two hundred twenty-seven billion, seven hundred twenty-one million, two hundred eighty-nine thousand, nine hundred eighteen".