12212015432523 has 4 divisors (see below), whose sum is σ = 16282687243368. Its totient is φ = 8141343621680.

The previous prime is 12212015432521. The next prime is 12212015432531. The reversal of 12212015432523 is 32523451021221.

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 12212015432523 - 2¹ = 12212015432521 is a prime.

It is a super-2 number, since 2×12212015432523² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12212015432521) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2035335905418 + ... + 2035335905423.

It is an arithmetic number, because the mean of its divisors is an integer number (4070671810842).

Almost surely, 2^{12212015432523} is an apocalyptic number.

12212015432523 is a deficient number, since it is larger than the sum of its proper divisors (4070671810845).

12212015432523 is an equidigital number, since it uses as much as digits as its factorization.

12212015432523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4070671810844.

The product of its (nonzero) digits is 28800, while the sum is 33.

Adding to 12212015432523 its reverse (32523451021221), we get a palindrome (44735466453744).

The spelling of 12212015432523 in words is "twelve trillion, two hundred twelve billion, fifteen million, four hundred thirty-two thousand, five hundred twenty-three".