20334212321 has 4 divisors (see below), whose sum is σ = 20358801072. Its totient is φ = 20309623572.

The previous prime is 20334212303. The next prime is 20334212383. The reversal of 20334212321 is 12321243302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20334212321 - 2²⁶ = 20267103457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20334212221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12293135 + ... + 12294788.

It is an arithmetic number, because the mean of its divisors is an integer number (5089700268).

Almost surely, 2^20334212321 is an apocalyptic number.

It is an amenable number.

20334212321 is a deficient number, since it is larger than the sum of its proper divisors (24588751).

20334212321 is an equidigital number, since it uses as much as digits as its factorization.

20334212321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24588750.

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

Adding to 20334212321 its reverse (12321243302), we get a palindrome (32655455623).

The spelling of 20334212321 in words is "twenty billion, three hundred thirty-four million, two hundred twelve thousand, three hundred twenty-one".