12216535504523 has 16 divisors (see below), whose sum is σ = 14087996375040. Its totient is φ = 10376826104736.

The previous prime is 12216535504487. The next prime is 12216535504567. The reversal of 12216535504523 is 32540553561221.

It is not a de Polignac number, because 12216535504523 - 2⁸ = 12216535504267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12216535504573) 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, 7194488 + ... + 8728901.

It is an arithmetic number, because the mean of its divisors is an integer number (880499773440).

Almost surely, 2^{12216535504523} is an apocalyptic number.

12216535504523 is a deficient number, since it is larger than the sum of its proper divisors (1871460870517).

12216535504523 is a wasteful number, since it uses less digits than its factorization.

12216535504523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15924386.

The product of its (nonzero) digits is 1080000, while the sum is 44.

The spelling of 12216535504523 in words is "twelve trillion, two hundred sixteen billion, five hundred thirty-five million, five hundred four thousand, five hundred twenty-three".