12103854763921 has 4 divisors (see below), whose sum is σ = 12199160707072. Its totient is φ = 12008548820772.

The previous prime is 12103854763879. The next prime is 12103854763933. The reversal of 12103854763921 is 12936745830121.

12103854763921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12103854763921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12103854764921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47652971385 + ... + 47652971638.

It is an arithmetic number, because the mean of its divisors is an integer number (3049790176768).

It is a 1-persistent number, because it is pandigital, but 2⋅12103854763921 = 24207709527842 is not.

Almost surely, 2^{12103854763921} is an apocalyptic number.

It is an amenable number.

12103854763921 is a deficient number, since it is larger than the sum of its proper divisors (95305943151).

12103854763921 is an equidigital number, since it uses as much as digits as its factorization.

12103854763921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95305943150.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 12103854763921 in words is "twelve trillion, one hundred three billion, eight hundred fifty-four million, seven hundred sixty-three thousand, nine hundred twenty-one".