20212322321 has 2 divisors, whose sum is σ = 20212322322. Its totient is φ = 20212322320.

The previous prime is 20212322293. The next prime is 20212322323. The reversal of 20212322321 is 12322321202.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10498051600 + 9714270721 = 102460^2 + 98561^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20212322321 is a prime.

Together with 20212322323, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20212322293 and 20212322302.

It is not a weakly prime, because it can be changed into another prime (20212322323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106161160 + 10106161161.

It is an arithmetic number, because the mean of its divisors is an integer number (10106161161).

Almost surely, 2^20212322321 is an apocalyptic number.

It is an amenable number.

20212322321 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212322321 is an equidigital number, since it uses as much as digits as its factorization.

20212322321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20212322321 its reverse (12322321202), we get a palindrome (32534643523).

The spelling of 20212322321 in words is "twenty billion, two hundred twelve million, three hundred twenty-two thousand, three hundred twenty-one".