12201201211986 has 36 divisors (see below), whose sum is σ = 26463740226378. Its totient is φ = 4062793980672.

The previous prime is 12201201211963. The next prime is 12201201211987. The reversal of 12201201211986 is 68911210210221.

12201201211986 is a `hidden beast` number, since 1 + 220 + 120 + 121 + 198 + 6 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 11453019461361 + 748181750625 = 3384231^2 + 864975^2 .

It is a super-2 number, since 2×12201201211986² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12201201211986.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201201211987) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 15974586 + ... + 16720938.

Almost surely, 2^{12201201211986} is an apocalyptic number.

12201201211986 is an abundant number, since it is smaller than the sum of its proper divisors (14262539014392).

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

12201201211986 is an frugal number, since it uses more digits than its factorization.

12201201211986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748267 (or 747311 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 36.

The spelling of 12201201211986 in words is "twelve trillion, two hundred one billion, two hundred one million, two hundred eleven thousand, nine hundred eighty-six".