12040320421111 has 4 divisors (see below), whose sum is σ = 12070346158224. Its totient is φ = 12010294684000.

The previous prime is 12040320421093. The next prime is 12040320421117. The reversal of 12040320421111 is 11112402304021.

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 12040320421111 - 2⁷ = 12040320420983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12040320421117) 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, 15012867955 + ... + 15012868756.

It is an arithmetic number, because the mean of its divisors is an integer number (3017586539556).

Almost surely, 2^{12040320421111} is an apocalyptic number.

12040320421111 is a deficient number, since it is larger than the sum of its proper divisors (30025737113).

12040320421111 is an equidigital number, since it uses as much as digits as its factorization.

12040320421111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30025737112.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 12040320421111 its reverse (11112402304021), we get a palindrome (23152722725132).

The spelling of 12040320421111 in words is "twelve trillion, forty billion, three hundred twenty million, four hundred twenty-one thousand, one hundred eleven".