2130002321 has 2 divisors, whose sum is σ = 2130002322. Its totient is φ = 2130002320.

The previous prime is 2130002317. The next prime is 2130002327. The reversal of 2130002321 is 1232000312.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1822350721 + 307651600 = 42689^2 + 17540^2 .

It is a cyclic number.

It is not a de Polignac number, because 2130002321 - 2² = 2130002317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2130002296 and 2130002305.

It is not a weakly prime, because it can be changed into another prime (2130002327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065001160 + 1065001161.

It is an arithmetic number, because the mean of its divisors is an integer number (1065001161).

Almost surely, 2^2130002321 is an apocalyptic number.

It is an amenable number.

2130002321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2130002321 is an equidigital number, since it uses as much as digits as its factorization.

2130002321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 2130002321 is about 46151.9481820649. The cubic root of 2130002321 is about 1286.6488185649.

Adding to 2130002321 its reverse (1232000312), we get a palindrome (3362002633).

The spelling of 2130002321 in words is "two billion, one hundred thirty million, two thousand, three hundred twenty-one".