12103321232021 has 2 divisors, whose sum is σ = 12103321232022. Its totient is φ = 12103321232020.

The previous prime is 12103321232003. The next prime is 12103321232087. The reversal of 12103321232021 is 12023212330121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7655398051921 + 4447923180100 = 2766839^2 + 2109010^2 .

It is a cyclic number.

It is not a de Polignac number, because 12103321232021 - 2¹⁰ = 12103321230997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12103321232621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6051660616010 + 6051660616011.

It is an arithmetic number, because the mean of its divisors is an integer number (6051660616011).

Almost surely, 2^{12103321232021} is an apocalyptic number.

It is an amenable number.

12103321232021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12103321232021 is an equidigital number, since it uses as much as digits as its factorization.

12103321232021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 12103321232021 its reverse (12023212330121), we get a palindrome (24126533562142).

The spelling of 12103321232021 in words is "twelve trillion, one hundred three billion, three hundred twenty-one million, two hundred thirty-two thousand, twenty-one".