210133312321 has 2 divisors, whose sum is σ = 210133312322. Its totient is φ = 210133312320.

The previous prime is 210133312313. The next prime is 210133312349. The reversal of 210133312321 is 123213331012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168460172721 + 41673139600 = 410439^2 + 204140^2 .

It is a cyclic number.

It is not a de Polignac number, because 210133312321 - 2³ = 210133312313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210133312292 and 210133312301.

It is not a weakly prime, because it can be changed into another prime (210133312391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105066656160 + 105066656161.

It is an arithmetic number, because the mean of its divisors is an integer number (105066656161).

Almost surely, 2^210133312321 is an apocalyptic number.

It is an amenable number.

210133312321 is a deficient number, since it is larger than the sum of its proper divisors (1).

210133312321 is an equidigital number, since it uses as much as digits as its factorization.

210133312321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 210133312321 its reverse (123213331012), we get a palindrome (333346643333).

The spelling of 210133312321 in words is "two hundred ten billion, one hundred thirty-three million, three hundred twelve thousand, three hundred twenty-one".