20124233321 has 2 divisors, whose sum is σ = 20124233322. Its totient is φ = 20124233320.

The previous prime is 20124233267. The next prime is 20124233357. The reversal of 20124233321 is 12333242102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17679425296 + 2444808025 = 132964^2 + 49445^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20124233321 is a prime.

It is not a weakly prime, because it can be changed into another prime (20124233621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10062116660 + 10062116661.

It is an arithmetic number, because the mean of its divisors is an integer number (10062116661).

Almost surely, 2^20124233321 is an apocalyptic number.

It is an amenable number.

20124233321 is a deficient number, since it is larger than the sum of its proper divisors (1).

20124233321 is an equidigital number, since it uses as much as digits as its factorization.

20124233321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 20124233321 its reverse (12333242102), we get a palindrome (32457475423).

The spelling of 20124233321 in words is "twenty billion, one hundred twenty-four million, two hundred thirty-three thousand, three hundred twenty-one".