212130111002321 has 2 divisors, whose sum is σ = 212130111002322. Its totient is φ = 212130111002320.

The previous prime is 212130111002291. The next prime is 212130111002323. The reversal of 212130111002321 is 123200111031212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200502768010000 + 11627342992321 = 14159900^2 + 3409889^2 .

It is a cyclic number.

It is not a de Polignac number, because 212130111002321 - 2²² = 212130106808017 is a prime.

Together with 212130111002323, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 212130111002293 and 212130111002302.

It is not a weakly prime, because it can be changed into another prime (212130111002323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106065055501160 + 106065055501161.

It is an arithmetic number, because the mean of its divisors is an integer number (106065055501161).

Almost surely, 2^{212130111002321} is an apocalyptic number.

It is an amenable number.

212130111002321 is a deficient number, since it is larger than the sum of its proper divisors (1).

212130111002321 is an equidigital number, since it uses as much as digits as its factorization.

212130111002321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 212130111002321 its reverse (123200111031212), we get a palindrome (335330222033533).

The spelling of 212130111002321 in words is "two hundred twelve trillion, one hundred thirty billion, one hundred eleven million, two thousand, three hundred twenty-one".