323211002222221 has 2 divisors, whose sum is σ = 323211002222222. Its totient is φ = 323211002222220.

The previous prime is 323211002222161. The next prime is 323211002222239. The reversal of 323211002222221 is 122222200112323.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 323211000924900 + 1297321 = 17978070^2 + 1139^2 .

It is an emirp because it is prime and its reverse (122222200112323) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 323211002222221 - 2¹³ = 323211002214029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (323211002220221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161605501111110 + 161605501111111.

It is an arithmetic number, because the mean of its divisors is an integer number (161605501111111).

Almost surely, 2^{323211002222221} is an apocalyptic number.

It is an amenable number.

323211002222221 is a deficient number, since it is larger than the sum of its proper divisors (1).

323211002222221 is an equidigital number, since it uses as much as digits as its factorization.

323211002222221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 323211002222221 its reverse (122222200112323), we get a palindrome (445433202334544).

The spelling of 323211002222221 in words is "three hundred twenty-three trillion, two hundred eleven billion, two million, two hundred twenty-two thousand, two hundred twenty-one".