12211465136515 has 16 divisors (see below), whose sum is σ = 15426195605568. Its totient is φ = 9261731454976.

The previous prime is 12211465136513. The next prime is 12211465136531. The reversal of 12211465136515 is 51563156411221.

It is a cyclic number.

It is not a de Polignac number, because 12211465136515 - 2¹ = 12211465136513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12211465136513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 469839454 + ... + 469865443.

It is an arithmetic number, because the mean of its divisors is an integer number (964137225348).

Almost surely, 2^{12211465136515} is an apocalyptic number.

12211465136515 is a deficient number, since it is larger than the sum of its proper divisors (3214730469053).

12211465136515 is a wasteful number, since it uses less digits than its factorization.

12211465136515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939705038.

The product of its digits is 216000, while the sum is 43.

The spelling of 12211465136515 in words is "twelve trillion, two hundred eleven billion, four hundred sixty-five million, one hundred thirty-six thousand, five hundred fifteen".