12205545100245 has 32 divisors (see below), whose sum is σ = 24798567824640. Its totient is φ = 5579677759680.

The previous prime is 12205545100223. The next prime is 12205545100271. The reversal of 12205545100245 is 54200154550221.

12205545100245 is a `hidden beast` number, since 1 + 2 + 2 + 0 + 5 + 545 + 100 + 2 + 4 + 5 = 666.

It is not a de Polignac number, because 12205545100245 - 2¹² = 12205545096149 is a prime.

It is a super-2 number, since 2×12205545100245² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6457959426 + ... + 6457961315.

It is an arithmetic number, because the mean of its divisors is an integer number (774955244520).

Almost surely, 2^{12205545100245} is an apocalyptic number.

12205545100245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12205545100245 is an abundant number, since it is smaller than the sum of its proper divisors (12593022724395).

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

12205545100245 is a wasteful number, since it uses less digits than its factorization.

12205545100245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12915920762 (or 12915920756 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 36.

Adding to 12205545100245 its reverse (54200154550221), we get a palindrome (66405699650466).

The spelling of 12205545100245 in words is "twelve trillion, two hundred five billion, five hundred forty-five million, one hundred thousand, two hundred forty-five".