12121323023 has 16 divisors (see below), whose sum is σ = 12402633696. Its totient is φ = 11843314560.

The previous prime is 12121323007. The next prime is 12121323031. The reversal of 12121323023 is 32032312121.

It is a cyclic number.

It is not a de Polignac number, because 12121323023 - 2⁴ = 12121323007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12121322986 and 12121323004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121323083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6269765 + ... + 6271697.

It is an arithmetic number, because the mean of its divisors is an integer number (775164606).

Almost surely, 2^12121323023 is an apocalyptic number.

12121323023 is a deficient number, since it is larger than the sum of its proper divisors (281310673).

12121323023 is a wasteful number, since it uses less digits than its factorization.

12121323023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2714.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 12121323023 its reverse (32032312121), we get a palindrome (44153635144).

The spelling of 12121323023 in words is "twelve billion, one hundred twenty-one million, three hundred twenty-three thousand, twenty-three".