12124202513 has 4 divisors (see below), whose sum is σ = 12451883700. Its totient is φ = 11796521328.

The previous prime is 12124202479. The next prime is 12124202533. The reversal of 12124202513 is 31520242121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31520242121 = 547 ⋅57623843.

It can be written as a sum of positive squares in 2 ways, for example, as 9593810704 + 2530391809 = 97948^2 + 50303^2 .

It is a cyclic number.

It is not a de Polignac number, because 12124202513 - 2⁶ = 12124202449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12124202533) 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, 163840538 + ... + 163840611.

It is an arithmetic number, because the mean of its divisors is an integer number (3112970925).

Almost surely, 2^12124202513 is an apocalyptic number.

It is an amenable number.

12124202513 is a deficient number, since it is larger than the sum of its proper divisors (327681187).

12124202513 is an equidigital number, since it uses as much as digits as its factorization.

12124202513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327681186.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 12124202513 its reverse (31520242121), we get a palindrome (43644444634).

The spelling of 12124202513 in words is "twelve billion, one hundred twenty-four million, two hundred two thousand, five hundred thirteen".