121343222123 has 2 divisors, whose sum is σ = 121343222124. Its totient is φ = 121343222122.

The previous prime is 121343222111. The next prime is 121343222213. The reversal of 121343222123 is 321222343121.

Together with next prime (121343222213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (321222343121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121343222123 - 2⁶ = 121343222059 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121343222092 and 121343222101.

It is not a weakly prime, because it can be changed into another prime (121343222023) 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 as a sum of consecutive naturals, namely, 60671611061 + 60671611062.

It is an arithmetic number, because the mean of its divisors is an integer number (60671611062).

Almost surely, 2^121343222123 is an apocalyptic number.

121343222123 is a deficient number, since it is larger than the sum of its proper divisors (1).

121343222123 is an equidigital number, since it uses as much as digits as its factorization.

121343222123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 26.

Adding to 121343222123 its reverse (321222343121), we get a palindrome (442565565244).

The spelling of 121343222123 in words is "one hundred twenty-one billion, three hundred forty-three million, two hundred twenty-two thousand, one hundred twenty-three".