121311122223023 has 4 divisors (see below), whose sum is σ = 121360901102040. Its totient is φ = 121261343344008.

The previous prime is 121311122223007. The next prime is 121311122223043. The reversal of 121311122223023 is 320322221113121.

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 121311122223023 - 2⁴ = 121311122223007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121311122222983 and 121311122223001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121311122223043) 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, 24889435853 + ... + 24889440726.

It is an arithmetic number, because the mean of its divisors is an integer number (30340225275510).

Almost surely, 2^{121311122223023} is an apocalyptic number.

121311122223023 is a deficient number, since it is larger than the sum of its proper divisors (49778879017).

121311122223023 is an equidigital number, since it uses as much as digits as its factorization.

121311122223023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49778879016.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 121311122223023 its reverse (320322221113121), we get a palindrome (441633343336144).

The spelling of 121311122223023 in words is "one hundred twenty-one trillion, three hundred eleven billion, one hundred twenty-two million, two hundred twenty-three thousand, twenty-three".