20212310213 has 2 divisors, whose sum is σ = 20212310214. Its totient is φ = 20212310212.

The previous prime is 20212310203. The next prime is 20212310249. The reversal of 20212310213 is 31201321202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18186680164 + 2025630049 = 134858^2 + 45007^2 .

It is a cyclic number.

It is not a de Polignac number, because 20212310213 - 2¹⁶ = 20212244677 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20212310191 and 20212310200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20212310203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106155106 + 10106155107.

It is an arithmetic number, because the mean of its divisors is an integer number (10106155107).

Almost surely, 2^20212310213 is an apocalyptic number.

It is an amenable number.

20212310213 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212310213 is an equidigital number, since it uses as much as digits as its factorization.

20212310213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20212310213 its reverse (31201321202), we get a palindrome (51413631415).

The spelling of 20212310213 in words is "twenty billion, two hundred twelve million, three hundred ten thousand, two hundred thirteen".