12216319477 has 8 divisors (see below), whose sum is σ = 13132886400. Its totient is φ = 11327112864.

The previous prime is 12216319447. The next prime is 12216319481. The reversal of 12216319477 is 77491361221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12216319477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12216319447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6839152 + ... + 6840937.

It is an arithmetic number, because the mean of its divisors is an integer number (1641610800).

Almost surely, 2^12216319477 is an apocalyptic number.

It is an amenable number.

12216319477 is a deficient number, since it is larger than the sum of its proper divisors (916566923).

12216319477 is a wasteful number, since it uses less digits than its factorization.

12216319477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13680155.

The product of its digits is 127008, while the sum is 43.

The spelling of 12216319477 in words is "twelve billion, two hundred sixteen million, three hundred nineteen thousand, four hundred seventy-seven".