12102403013 has 4 divisors (see below), whose sum is σ = 12120712908. Its totient is φ = 12084093120.

The previous prime is 12102402997. The next prime is 12102403021. The reversal of 12102403013 is 31030420121.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4432496929 + 7669906084 = 66577^2 + 87578^2 .

It is a cyclic number.

It is not a de Polignac number, because 12102403013 - 2⁴ = 12102402997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12102402982 and 12102403000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102403213) 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, 9153956 + ... + 9155277.

It is an arithmetic number, because the mean of its divisors is an integer number (3030178227).

Almost surely, 2^12102403013 is an apocalyptic number.

It is an amenable number.

12102403013 is a deficient number, since it is larger than the sum of its proper divisors (18309895).

12102403013 is an equidigital number, since it uses as much as digits as its factorization.

12102403013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18309894.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 12102403013 its reverse (31030420121), we get a palindrome (43132823134).

The spelling of 12102403013 in words is "twelve billion, one hundred two million, four hundred three thousand, thirteen".