20002337321 has 2 divisors, whose sum is σ = 20002337322. Its totient is φ = 20002337320.

The previous prime is 20002337293. The next prime is 20002337339. The reversal of 20002337321 is 12373320002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18424261696 + 1578075625 = 135736^2 + 39725^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20002337321 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (20002327321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001168660 + 10001168661.

It is an arithmetic number, because the mean of its divisors is an integer number (10001168661).

Almost surely, 2^20002337321 is an apocalyptic number.

It is an amenable number.

20002337321 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002337321 is an equidigital number, since it uses as much as digits as its factorization.

20002337321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 23.

Adding to 20002337321 its reverse (12373320002), we get a palindrome (32375657323).

The spelling of 20002337321 in words is "twenty billion, two million, three hundred thirty-seven thousand, three hundred twenty-one".