2130301021 has 2 divisors, whose sum is σ = 2130301022. Its totient is φ = 2130301020.

The previous prime is 2130301007. The next prime is 2130301051. The reversal of 2130301021 is 1201030312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1548816025 + 581484996 = 39355^2 + 24114^2 .

It is a cyclic number.

It is not a de Polignac number, because 2130301021 - 2¹⁵ = 2130268253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2130300992 and 2130301010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2130301051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065150510 + 1065150511.

It is an arithmetic number, because the mean of its divisors is an integer number (1065150511).

Almost surely, 2^2130301021 is an apocalyptic number.

It is an amenable number.

2130301021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2130301021 is an equidigital number, since it uses as much as digits as its factorization.

2130301021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 2130301021 is about 46155.1841183631. The cubic root of 2130301021 is about 1286.7089599764.

Adding to 2130301021 its reverse (1201030312), we get a palindrome (3331331333).

The spelling of 2130301021 in words is "two billion, one hundred thirty million, three hundred one thousand, twenty-one".