2130211021 has 2 divisors, whose sum is σ = 2130211022. Its totient is φ = 2130211020.

The previous prime is 2130211003. The next prime is 2130211051. The reversal of 2130211021 is 1201120312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1824485796 + 305725225 = 42714^2 + 17485^2 .

It is a cyclic number.

It is not a de Polignac number, because 2130211021 - 2⁷ = 2130210893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2130210992 and 2130211010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2130211051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065105510 + 1065105511.

It is an arithmetic number, because the mean of its divisors is an integer number (1065105511).

Almost surely, 2^2130211021 is an apocalyptic number.

It is an amenable number.

2130211021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2130211021 is an equidigital number, since it uses as much as digits as its factorization.

2130211021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2130211021 is about 46154.2091363291. The cubic root of 2130211021 is about 1286.6908396206.

Adding to 2130211021 its reverse (1201120312), we get a palindrome (3331331333).

It can be divided in two parts, 21302 and 11021, that added together give a palindrome (32323).

The spelling of 2130211021 in words is "two billion, one hundred thirty million, two hundred eleven thousand, twenty-one".