12403124213 has 4 divisors (see below), whose sum is σ = 12403398540. Its totient is φ = 12402849888.

The previous prime is 12403124191. The next prime is 12403124257. The reversal of 12403124213 is 31242130421.

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 293882449 + 12109241764 = 17143^2 + 110042^2 .

It is a cyclic number.

It is not a de Polignac number, because 12403124213 - 2²² = 12398929909 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12403124113) 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 3 ways as a sum of consecutive naturals, for example, 51518 + ... + 165711.

It is an arithmetic number, because the mean of its divisors is an integer number (3100849635).

Almost surely, 2^12403124213 is an apocalyptic number.

It is an amenable number.

12403124213 is a deficient number, since it is larger than the sum of its proper divisors (274327).

12403124213 is an equidigital number, since it uses as much as digits as its factorization.

12403124213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274326.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 12403124213 its reverse (31242130421), we get a palindrome (43645254634).

The spelling of 12403124213 in words is "twelve billion, four hundred three million, one hundred twenty-four thousand, two hundred thirteen".