12111330621523 has 8 divisors (see below), whose sum is σ = 14031130583648. Its totient is φ = 10238933127744.

The previous prime is 12111330621479. The next prime is 12111330621541. The reversal of 12111330621523 is 32512603311121.

12111330621523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12111330621523 - 2²¹ = 12111328524371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12111330661523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11850616536 + ... + 11850617557.

It is an arithmetic number, because the mean of its divisors is an integer number (1753891322956).

Almost surely, 2^{12111330621523} is an apocalyptic number.

12111330621523 is a deficient number, since it is larger than the sum of its proper divisors (1919799962125).

12111330621523 is an equidigital number, since it uses as much as digits as its factorization.

12111330621523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23701234173.

The product of its (nonzero) digits is 6480, while the sum is 31.

Adding to 12111330621523 its reverse (32512603311121), we get a palindrome (44623933932644).

The spelling of 12111330621523 in words is "twelve trillion, one hundred eleven billion, three hundred thirty million, six hundred twenty-one thousand, five hundred twenty-three".