12412231421 has 4 divisors (see below), whose sum is σ = 12417646812. Its totient is φ = 12406816032.

The previous prime is 12412231411. The next prime is 12412231423. The reversal of 12412231421 is 12413221421.

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 1390171225 + 11022060196 = 37285^2 + 104986^2 .

It is a cyclic number.

It is not a de Polignac number, because 12412231421 - 2⁶ = 12412231357 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 (12412231423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2704256 + ... + 2708841.

It is an arithmetic number, because the mean of its divisors is an integer number (3104411703).

Almost surely, 2^12412231421 is an apocalyptic number.

It is an amenable number.

12412231421 is a deficient number, since it is larger than the sum of its proper divisors (5415391).

12412231421 is an equidigital number, since it uses as much as digits as its factorization.

12412231421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5415390.

The product of its digits is 768, while the sum is 23.

Adding to 12412231421 its reverse (12413221421), we get a palindrome (24825452842).

The spelling of 12412231421 in words is "twelve billion, four hundred twelve million, two hundred thirty-one thousand, four hundred twenty-one".