12421185716 has 12 divisors (see below), whose sum is σ = 21766336032. Its totient is φ = 6202232568.

The previous prime is 12421185713. The next prime is 12421185757. The reversal of 12421185716 is 61758112421.

It is a self number, because there is not a number n which added to its sum of digits gives 12421185716.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12421185713) 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, 2086730 + ... + 2092673.

It is an arithmetic number, because the mean of its divisors is an integer number (1813861336).

Almost surely, 2^12421185716 is an apocalyptic number.

It is an amenable number.

12421185716 is a deficient number, since it is larger than the sum of its proper divisors (9345150316).

12421185716 is a wasteful number, since it uses less digits than its factorization.

12421185716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4180150 (or 4180148 counting only the distinct ones).

The product of its digits is 26880, while the sum is 38.

The spelling of 12421185716 in words is "twelve billion, four hundred twenty-one million, one hundred eighty-five thousand, seven hundred sixteen".