12104440011421 has 8 divisors (see below), whose sum is σ = 12413017625400. Its totient is φ = 11796497986560.

The previous prime is 12104440011383. The next prime is 12104440011439. The reversal of 12104440011421 is 12411004440121.

It can be written as a sum of positive squares in 4 ways, for example, as 260421399225 + 11844018612196 = 510315^2 + 3441514^2 .

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 12104440011421 - 2²⁷ = 12104305793693 is a prime.

It is a super-2 number, since 2×12104440011421² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12104440011491) 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, 158858706 + ... + 158934883.

It is an arithmetic number, because the mean of its divisors is an integer number (1551627203175).

Almost surely, 2^{12104440011421} is an apocalyptic number.

It is an amenable number.

12104440011421 is a deficient number, since it is larger than the sum of its proper divisors (308577613979).

12104440011421 is an equidigital number, since it uses as much as digits as its factorization.

12104440011421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317794559.

The product of its (nonzero) digits is 1024, while the sum is 25.

Adding to 12104440011421 its reverse (12411004440121), we get a palindrome (24515444451542).

The spelling of 12104440011421 in words is "twelve trillion, one hundred four billion, four hundred forty million, eleven thousand, four hundred twenty-one".