2102143321 has 2 divisors, whose sum is σ = 2102143322. Its totient is φ = 2102143320.

The previous prime is 2102143301. The next prime is 2102143327. The reversal of 2102143321 is 1233412012.

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., 1813822921 + 288320400 = 42589^2 + 16980^2 .

It is a cyclic number.

It is not a de Polignac number, because 2102143321 - 2²⁹ = 1565272409 is a prime.

It is not a weakly prime, because it can be changed into another prime (2102143327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051071660 + 1051071661.

It is an arithmetic number, because the mean of its divisors is an integer number (1051071661).

Almost surely, 2^2102143321 is an apocalyptic number.

It is an amenable number.

2102143321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102143321 is an equidigital number, since it uses as much as digits as its factorization.

2102143321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2102143321 is about 45849.1365349447. The cubic root of 2102143321 is about 1281.0146822851.

Adding to 2102143321 its reverse (1233412012), we get a palindrome (3335555333).

The spelling of 2102143321 in words is "two billion, one hundred two million, one hundred forty-three thousand, three hundred twenty-one".