12102321111121 has 2 divisors, whose sum is σ = 12102321111122. Its totient is φ = 12102321111120.

The previous prime is 12102321111119. The next prime is 12102321111137. The reversal of 12102321111121 is 12111112320121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11940556271121 + 161764840000 = 3455511^2 + 402200^2 .

It is a cyclic number.

It is not a de Polignac number, because 12102321111121 - 2¹ = 12102321111119 is a prime.

Together with 12102321111119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12102321111421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6051160555560 + 6051160555561.

It is an arithmetic number, because the mean of its divisors is an integer number (6051160555561).

Almost surely, 2^{12102321111121} is an apocalyptic number.

It is an amenable number.

12102321111121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12102321111121 is an equidigital number, since it uses as much as digits as its factorization.

12102321111121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 12102321111121 its reverse (12111112320121), we get a palindrome (24213433431242).

The spelling of 12102321111121 in words is "twelve trillion, one hundred two billion, three hundred twenty-one million, one hundred eleven thousand, one hundred twenty-one".