20334311321 has 16 divisors (see below), whose sum is σ = 21349785600. Its totient is φ = 19340260800.

The previous prime is 20334311311. The next prime is 20334311329. The reversal of 20334311321 is 12311343302.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20334311321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20334311329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2938856 + ... + 2945766.

It is an arithmetic number, because the mean of its divisors is an integer number (1334361600).

Almost surely, 2^20334311321 is an apocalyptic number.

It is an amenable number.

20334311321 is a deficient number, since it is larger than the sum of its proper divisors (1015474279).

20334311321 is a wasteful number, since it uses less digits than its factorization.

20334311321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8440.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 20334311321 its reverse (12311343302), we get a palindrome (32645654623).

The spelling of 20334311321 in words is "twenty billion, three hundred thirty-four million, three hundred eleven thousand, three hundred twenty-one".