12201217916 has 24 divisors (see below), whose sum is σ = 22485793680. Its totient is φ = 5776987392.

The previous prime is 12201217913. The next prime is 12201217933. The reversal of 12201217916 is 61971210221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201217913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145076 + ... + 213188.

It is an arithmetic number, because the mean of its divisors is an integer number (936908070).

Almost surely, 2^12201217916 is an apocalyptic number.

It is an amenable number.

12201217916 is a deficient number, since it is larger than the sum of its proper divisors (10284575764).

12201217916 is a wasteful number, since it uses less digits than its factorization.

12201217916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70493 (or 70491 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 32.

The spelling of 12201217916 in words is "twelve billion, two hundred one million, two hundred seventeen thousand, nine hundred sixteen".