12135201226056 has 48 divisors (see below), whose sum is σ = 32866914925260. Its totient is φ = 4044975390720.

The previous prime is 12135201225991. The next prime is 12135201226081. The reversal of 12135201226056 is 65062210253121.

12135201226056 is a `hidden beast` number, since 1 + 2 + 1 + 3 + 5 + 20 + 1 + 22 + 605 + 6 = 666.

12135201226056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 11691845003556 + 443356222500 = 3419334^2 + 665850^2 .

It is a super-2 number, since 2×12135201226056² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 12135201226056.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1326376 + ... + 5101928.

Almost surely, 2^{12135201226056} is an apocalyptic number.

It is an amenable number.

12135201226056 is an abundant number, since it is smaller than the sum of its proper divisors (20731713699204).

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

12135201226056 is a wasteful number, since it uses less digits than its factorization.

12135201226056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3820206 (or 3820199 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

Adding to 12135201226056 its reverse (65062210253121), we get a palindrome (77197411479177).

The spelling of 12135201226056 in words is "twelve trillion, one hundred thirty-five billion, two hundred one million, two hundred twenty-six thousand, fifty-six".