12041402321 has 4 divisors (see below), whose sum is σ = 12967664052. Its totient is φ = 11115140592.

The previous prime is 12041402297. The next prime is 12041402339. The reversal of 12041402321 is 12320414021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2346046096 + 9695356225 = 48436^2 + 98465^2 .

It is a cyclic number.

It is not a de Polignac number, because 12041402321 - 2²² = 12037208017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12041402293 and 12041402302.

It is not an unprimeable number, because it can be changed into a prime (12041402621) 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, 463130846 + ... + 463130871.

It is an arithmetic number, because the mean of its divisors is an integer number (3241916013).

Almost surely, 2^12041402321 is an apocalyptic number.

It is an amenable number.

12041402321 is a deficient number, since it is larger than the sum of its proper divisors (926261731).

12041402321 is an equidigital number, since it uses as much as digits as its factorization.

12041402321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926261730.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 12041402321 its reverse (12320414021), we get a palindrome (24361816342).

The spelling of 12041402321 in words is "twelve billion, forty-one million, four hundred two thousand, three hundred twenty-one".