12012109487923 has 2 divisors, whose sum is σ = 12012109487924. Its totient is φ = 12012109487922.

The previous prime is 12012109487909. The next prime is 12012109487977. The reversal of 12012109487923 is 32978490121021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12012109487923 - 2⁵ = 12012109487891 is a prime.

It is not a weakly prime, because it can be changed into another prime (12012109487023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6006054743961 + 6006054743962.

It is an arithmetic number, because the mean of its divisors is an integer number (6006054743962).

Almost surely, 2^{12012109487923} is an apocalyptic number.

12012109487923 is a deficient number, since it is larger than the sum of its proper divisors (1).

12012109487923 is an equidigital number, since it uses as much as digits as its factorization.

12012109487923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 49.

The spelling of 12012109487923 in words is "twelve trillion, twelve billion, one hundred nine million, four hundred eighty-seven thousand, nine hundred twenty-three".