12331111230421 has 4 divisors (see below), whose sum is σ = 12331562467500. Its totient is φ = 12330659993344.

The previous prime is 12331111230337. The next prime is 12331111230433. The reversal of 12331111230421 is 12403211113321.

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 9667559932900 + 2663551297521 = 3109270^2 + 1632039^2 .

It is a cyclic number.

It is not a de Polignac number, because 12331111230421 - 2⁷ = 12331111230293 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 (12331111230121) 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, 225577546 + ... + 225632203.

It is an arithmetic number, because the mean of its divisors is an integer number (3082890616875).

Almost surely, 2^{12331111230421} is an apocalyptic number.

It is an amenable number.

12331111230421 is a deficient number, since it is larger than the sum of its proper divisors (451237079).

12331111230421 is an equidigital number, since it uses as much as digits as its factorization.

12331111230421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451237078.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 12331111230421 its reverse (12403211113321), we get a palindrome (24734322343742).

The spelling of 12331111230421 in words is "twelve trillion, three hundred thirty-one billion, one hundred eleven million, two hundred thirty thousand, four hundred twenty-one".