12121204343 has 2 divisors, whose sum is σ = 12121204344. Its totient is φ = 12121204342.

The previous prime is 12121204331. The next prime is 12121204367. The reversal of 12121204343 is 34340212121.

It is a weak prime.

It is an emirp because it is prime and its reverse (34340212121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12121204343 - 2²² = 12117010039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12121204313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060602171 + 6060602172.

It is an arithmetic number, because the mean of its divisors is an integer number (6060602172).

Almost surely, 2^12121204343 is an apocalyptic number.

12121204343 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121204343 is an equidigital number, since it uses as much as digits as its factorization.

12121204343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 12121204343 its reverse (34340212121), we get a palindrome (46461416464).

The spelling of 12121204343 in words is "twelve billion, one hundred twenty-one million, two hundred four thousand, three hundred forty-three".