12216667805 has 8 divisors (see below), whose sum is σ = 14714098944. Its totient is φ = 9737269200.

The previous prime is 12216667783. The next prime is 12216667817. The reversal of 12216667805 is 50876661221.

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

It is not a de Polignac number, because 12216667805 - 2²⁴ = 12199890589 is a prime.

It is a Duffinian number.

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, 4506641 + ... + 4509350.

It is an arithmetic number, because the mean of its divisors is an integer number (1839262368).

Almost surely, 2^12216667805 is an apocalyptic number.

It is an amenable number.

12216667805 is a deficient number, since it is larger than the sum of its proper divisors (2497431139).

12216667805 is an equidigital number, since it uses as much as digits as its factorization.

12216667805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9016267.

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 12216667805 in words is "twelve billion, two hundred sixteen million, six hundred sixty-seven thousand, eight hundred five".