20124241321 has 2 divisors, whose sum is σ = 20124241322. Its totient is φ = 20124241320.

The previous prime is 20124241301. The next prime is 20124241339. The reversal of 20124241321 is 12314242102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17212128025 + 2912113296 = 131195^2 + 53964^2 .

It is a cyclic number.

It is not a de Polignac number, because 20124241321 - 2¹¹ = 20124239273 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20124241292 and 20124241301.

It is not a weakly prime, because it can be changed into another prime (20124241301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10062120660 + 10062120661.

It is an arithmetic number, because the mean of its divisors is an integer number (10062120661).

Almost surely, 2^20124241321 is an apocalyptic number.

It is an amenable number.

20124241321 is a deficient number, since it is larger than the sum of its proper divisors (1).

20124241321 is an equidigital number, since it uses as much as digits as its factorization.

20124241321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 20124241321 its reverse (12314242102), we get a palindrome (32438483423).

The spelling of 20124241321 in words is "twenty billion, one hundred twenty-four million, two hundred forty-one thousand, three hundred twenty-one".