20001322331 has 2 divisors, whose sum is σ = 20001322332. Its totient is φ = 20001322330.

The previous prime is 20001322241. The next prime is 20001322339. The reversal of 20001322331 is 13322310002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20001322331 is a prime.

It is a super-2 number, since 2×20001322331² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20001322339) 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 as a sum of consecutive naturals, namely, 10000661165 + 10000661166.

It is an arithmetic number, because the mean of its divisors is an integer number (10000661166).

Almost surely, 2^20001322331 is an apocalyptic number.

20001322331 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001322331 is an equidigital number, since it uses as much as digits as its factorization.

20001322331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20001322331 its reverse (13322310002), we get a palindrome (33323632333).

The spelling of 20001322331 in words is "twenty billion, one million, three hundred twenty-two thousand, three hundred thirty-one".