12515300140221 has 16 divisors (see below), whose sum is σ = 18648359881920. Its totient is φ = 8295304906800.

The previous prime is 12515300140207. The next prime is 12515300140241. The reversal of 12515300140221 is 12204100351521.

It is a happy number.

12515300140221 is a `hidden beast` number, since 1 + 2 + 515 + 3 + 0 + 0 + 140 + 2 + 2 + 1 = 666.

12515300140221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12515300140221 - 2¹⁰ = 12515300139197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12515300140241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1339676355 + ... + 1339685696.

It is an arithmetic number, because the mean of its divisors is an integer number (1165522492620).

Almost surely, 2^{12515300140221} is an apocalyptic number.

It is an amenable number.

12515300140221 is a deficient number, since it is larger than the sum of its proper divisors (6133059741699).

12515300140221 is a wasteful number, since it uses less digits than its factorization.

12515300140221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2679362233 (or 2679362227 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 12515300140221 its reverse (12204100351521), we get a palindrome (24719400491742).

The spelling of 12515300140221 in words is "twelve trillion, five hundred fifteen billion, three hundred million, one hundred forty thousand, two hundred twenty-one".