12206216776 has 16 divisors (see below), whose sum is σ = 24647168700. Its totient is φ = 5633638464.

The previous prime is 12206216773. The next prime is 12206216779. The reversal of 12206216776 is 67761260221.

It is an interprime number because it is at equal distance from previous prime (12206216773) and next prime (12206216779).

It can be written as a sum of positive squares in 2 ways, for example, as 10409304676 + 1796912100 = 102026^2 + 42390^2 .

It is not an unprimeable number, because it can be changed into a prime (12206216773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58683631 + ... + 58683838.

Almost surely, 2^12206216776 is an apocalyptic number.

It is an amenable number.

12206216776 is an abundant number, since it is smaller than the sum of its proper divisors (12440951924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12206216776 is a wasteful number, since it uses less digits than its factorization.

12206216776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117367488 (or 117367484 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 40.

Adding to 12206216776 its reverse (67761260221), we get a palindrome (79967476997).

The spelling of 12206216776 in words is "twelve billion, two hundred six million, two hundred sixteen thousand, seven hundred seventy-six".