121321013123323 has 4 divisors (see below), whose sum is σ = 130653398748208. Its totient is φ = 111988627498440.

The previous prime is 121321013123279. The next prime is 121321013123381. The reversal of 121321013123323 is 323321310123121.

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 121321013123323 - 2²⁵ = 121320979568891 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121321013123291 and 121321013123300.

It is not an unprimeable number, because it can be changed into a prime (121321013123423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4666192812423 + ... + 4666192812448.

It is an arithmetic number, because the mean of its divisors is an integer number (32663349687052).

Almost surely, 2^{121321013123323} is an apocalyptic number.

121321013123323 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121321013123323 is a deficient number, since it is larger than the sum of its proper divisors (9332385624885).

121321013123323 is an equidigital number, since it uses as much as digits as its factorization.

121321013123323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9332385624884.

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 121321013123323 its reverse (323321310123121), we get a palindrome (444642323246444).

The spelling of 121321013123323 in words is "one hundred twenty-one trillion, three hundred twenty-one billion, thirteen million, one hundred twenty-three thousand, three hundred twenty-three".