12541322215 has 4 divisors (see below), whose sum is σ = 15049586664. Its totient is φ = 10033057768.

The previous prime is 12541322173. The next prime is 12541322293. The reversal of 12541322215 is 51222314521.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12541322215 - 2¹¹ = 12541320167 is a prime.

It is a super-3 number, since 3×12541322215³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1254132217 + ... + 1254132226.

It is an arithmetic number, because the mean of its divisors is an integer number (3762396666).

Almost surely, 2^12541322215 is an apocalyptic number.

12541322215 is a deficient number, since it is larger than the sum of its proper divisors (2508264449).

12541322215 is an equidigital number, since it uses as much as digits as its factorization.

12541322215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2508264448.

The product of its digits is 4800, while the sum is 28.

Adding to 12541322215 its reverse (51222314521), we get a palindrome (63763636736).

The spelling of 12541322215 in words is "twelve billion, five hundred forty-one million, three hundred twenty-two thousand, two hundred fifteen".