213233303321 has 2 divisors, whose sum is σ = 213233303322. Its totient is φ = 213233303320.

The previous prime is 213233303299. The next prime is 213233303329. The reversal of 213233303321 is 123303332312.

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., 168855246400 + 44378056921 = 410920^2 + 210661^2 .

It is a cyclic number.

It is not a de Polignac number, because 213233303321 - 2²² = 213229109017 is a prime.

It is not a weakly prime, because it can be changed into another prime (213233303329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106616651660 + 106616651661.

It is an arithmetic number, because the mean of its divisors is an integer number (106616651661).

Almost surely, 2^213233303321 is an apocalyptic number.

It is an amenable number.

213233303321 is a deficient number, since it is larger than the sum of its proper divisors (1).

213233303321 is an equidigital number, since it uses as much as digits as its factorization.

213233303321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 26.

Adding to 213233303321 its reverse (123303332312), we get a palindrome (336536635633).

The spelling of 213233303321 in words is "two hundred thirteen billion, two hundred thirty-three million, three hundred three thousand, three hundred twenty-one".