12217841078 has 16 divisors (see below), whose sum is σ = 19670629680. Its totient is φ = 5670809856.

The previous prime is 12217841039. The next prime is 12217841081. The reversal of 12217841078 is 87014871221.

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, 2458808 + ... + 2463771.

It is an arithmetic number, because the mean of its divisors is an integer number (1229414355).

Almost surely, 2^12217841078 is an apocalyptic number.

12217841078 is a deficient number, since it is larger than the sum of its proper divisors (7452788602).

12217841078 is a wasteful number, since it uses less digits than its factorization.

12217841078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4922671.

The product of its (nonzero) digits is 50176, while the sum is 41.

The spelling of 12217841078 in words is "twelve billion, two hundred seventeen million, eight hundred forty-one thousand, seventy-eight".