12103321231121 has 4 divisors (see below), whose sum is σ = 12103611861744. Its totient is φ = 12103030600500.

The previous prime is 12103321231103. The next prime is 12103321231193. The reversal of 12103321231121 is 12113212330121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12103321231121 - 2²² = 12103317036817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12103321237121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145252835 + ... + 145336136.

It is an arithmetic number, because the mean of its divisors is an integer number (3025902965436).

Almost surely, 2^{12103321231121} is an apocalyptic number.

It is an amenable number.

12103321231121 is a deficient number, since it is larger than the sum of its proper divisors (290630623).

12103321231121 is an equidigital number, since it uses as much as digits as its factorization.

12103321231121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290630622.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 12103321231121 its reverse (12113212330121), we get a palindrome (24216533561242).

The spelling of 12103321231121 in words is "twelve trillion, one hundred three billion, three hundred twenty-one million, two hundred thirty-one thousand, one hundred twenty-one".