213230203321 has 2 divisors, whose sum is σ = 213230203322. Its totient is φ = 213230203320.

The previous prime is 213230203313. The next prime is 213230203327. The reversal of 213230203321 is 123302032312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141553527696 + 71676675625 = 376236^2 + 267725^2 .

It is a cyclic number.

It is not a de Polignac number, because 213230203321 - 2³ = 213230203313 is a prime.

It is a super-4 number, since 4×213230203321⁴ (a number of 46 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213230203292 and 213230203301.

It is not a weakly prime, because it can be changed into another prime (213230203327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106615101660 + 106615101661.

It is an arithmetic number, because the mean of its divisors is an integer number (106615101661).

Almost surely, 2^213230203321 is an apocalyptic number.

It is an amenable number.

213230203321 is a deficient number, since it is larger than the sum of its proper divisors (1).

213230203321 is an equidigital number, since it uses as much as digits as its factorization.

213230203321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 213230203321 its reverse (123302032312), we get a palindrome (336532235633).

The spelling of 213230203321 in words is "two hundred thirteen billion, two hundred thirty million, two hundred three thousand, three hundred twenty-one".