121324243123 has 4 divisors (see below), whose sum is σ = 121706969760. Its totient is φ = 120941516488.

The previous prime is 121324243097. The next prime is 121324243193. The reversal of 121324243123 is 321342423121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121324243123 - 2¹⁷ = 121324112051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121324243091 and 121324243100.

It is not an unprimeable number, because it can be changed into a prime (121324243193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191362843 + ... + 191363476.

It is an arithmetic number, because the mean of its divisors is an integer number (30426742440).

Almost surely, 2^121324243123 is an apocalyptic number.

121324243123 is a deficient number, since it is larger than the sum of its proper divisors (382726637).

121324243123 is an equidigital number, since it uses as much as digits as its factorization.

121324243123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382726636.

The product of its digits is 6912, while the sum is 28.

Adding to 121324243123 its reverse (321342423121), we get a palindrome (442666666244).

The spelling of 121324243123 in words is "one hundred twenty-one billion, three hundred twenty-four million, two hundred forty-three thousand, one hundred twenty-three".