12023121513 has 16 divisors (see below), whose sum is σ = 17859280320. Its totient is φ = 7143710784.

The previous prime is 12023121479. The next prime is 12023121521. The reversal of 12023121513 is 31512132021.

It is not a de Polignac number, because 12023121513 - 2⁹ = 12023121001 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12023121513.

It is not an unprimeable number, because it can be changed into a prime (12023121563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5314131 + ... + 5316392.

It is an arithmetic number, because the mean of its divisors is an integer number (1116205020).

Almost surely, 2^12023121513 is an apocalyptic number.

12023121513 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12023121513 is a deficient number, since it is larger than the sum of its proper divisors (5836158807).

12023121513 is a wasteful number, since it uses less digits than its factorization.

12023121513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10630568.

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 12023121513 its reverse (31512132021), we get a palindrome (43535253534).

The spelling of 12023121513 in words is "twelve billion, twenty-three million, one hundred twenty-one thousand, five hundred thirteen".