20003321311 has 2 divisors, whose sum is σ = 20003321312. Its totient is φ = 20003321310.

The previous prime is 20003321297. The next prime is 20003321339. The reversal of 20003321311 is 11312330002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20003321311 - 2⁷ = 20003321183 is a prime.

It is a super-2 number, since 2×20003321311² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20003328311) 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, 10001660655 + 10001660656.

It is an arithmetic number, because the mean of its divisors is an integer number (10001660656).

Almost surely, 2^20003321311 is an apocalyptic number.

20003321311 is a deficient number, since it is larger than the sum of its proper divisors (1).

20003321311 is an equidigital number, since it uses as much as digits as its factorization.

20003321311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20003321311 its reverse (11312330002), we get a palindrome (31315651313).

The spelling of 20003321311 in words is "twenty billion, three million, three hundred twenty-one thousand, three hundred eleven".