323212203020221 has 2 divisors, whose sum is σ = 323212203020222. Its totient is φ = 323212203020220.

The previous prime is 323212203020219. The next prime is 323212203020293. The reversal of 323212203020221 is 122020302212323.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 322664878265625 + 547324754596 = 17962875^2 + 739814^2 .

It is a cyclic number.

It is not a de Polignac number, because 323212203020221 - 2¹ = 323212203020219 is a prime.

It is a super-2 number, since 2×323212203020221² (a number of 30 digits) contains 22 as substring.

Together with 323212203020219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (323212200020221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161606101510110 + 161606101510111.

It is an arithmetic number, because the mean of its divisors is an integer number (161606101510111).

Almost surely, 2^{323212203020221} is an apocalyptic number.

It is an amenable number.

323212203020221 is a deficient number, since it is larger than the sum of its proper divisors (1).

323212203020221 is an equidigital number, since it uses as much as digits as its factorization.

323212203020221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 323212203020221 its reverse (122020302212323), we get a palindrome (445232505232544).

The spelling of 323212203020221 in words is "three hundred twenty-three trillion, two hundred twelve billion, two hundred three million, twenty thousand, two hundred twenty-one".