2130205321 has 2 divisors, whose sum is σ = 2130205322. Its totient is φ = 2130205320.

The previous prime is 2130205277. The next prime is 2130205367. The reversal of 2130205321 is 1235020312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2087119225 + 43086096 = 45685^2 + 6564^2 .

It is a cyclic number.

It is not a de Polignac number, because 2130205321 - 2⁹ = 2130204809 is a prime.

It is not a weakly prime, because it can be changed into another prime (2130200321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065102660 + 1065102661.

It is an arithmetic number, because the mean of its divisors is an integer number (1065102661).

Almost surely, 2^2130205321 is an apocalyptic number.

It is an amenable number.

2130205321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2130205321 is an equidigital number, since it uses as much as digits as its factorization.

2130205321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 2130205321 is about 46154.1473867734. The cubic root of 2130205321 is about 1286.6896919809.

Adding to 2130205321 its reverse (1235020312), we get a palindrome (3365225633).

The spelling of 2130205321 in words is "two billion, one hundred thirty million, two hundred five thousand, three hundred twenty-one".