12201967720 has 16 divisors (see below), whose sum is σ = 27454427460. Its totient is φ = 4880787072.

The previous prime is 12201967717. The next prime is 12201967721. The reversal of 12201967720 is 2776910221.

It can be written as a sum of positive squares in 2 ways, for example, as 11292462756 + 909504964 = 106266^2 + 30158^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12201967720.

It is not an unprimeable number, because it can be changed into a prime (12201967721) 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, 152524557 + ... + 152524636.

Almost surely, 2^12201967720 is an apocalyptic number.

12201967720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12201967720 is an abundant number, since it is smaller than the sum of its proper divisors (15252459740).

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

12201967720 is a wasteful number, since it uses less digits than its factorization.

12201967720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305049204 (or 305049200 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 37.

The spelling of 12201967720 in words is "twelve billion, two hundred one million, nine hundred sixty-seven thousand, seven hundred twenty".