212108513 has 2 divisors, whose sum is σ = 212108514. Its totient is φ = 212108512.

The previous prime is 212108497. The next prime is 212108543. The reversal of 212108513 is 315801212.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108638929 + 103469584 = 10423^2 + 10172^2 .

It is a cyclic number.

It is not a de Polignac number, because 212108513 - 2⁴ = 212108497 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212108543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106054256 + 106054257.

It is an arithmetic number, because the mean of its divisors is an integer number (106054257).

Almost surely, 2^212108513 is an apocalyptic number.

It is an amenable number.

212108513 is a deficient number, since it is larger than the sum of its proper divisors (1).

212108513 is an equidigital number, since it uses as much as digits as its factorization.

212108513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 212108513 is about 14563.9456535652. The cubic root of 212108513 is about 596.3749133166.

Adding to 212108513 its reverse (315801212), we get a palindrome (527909725).

The spelling of 212108513 in words is "two hundred twelve million, one hundred eight thousand, five hundred thirteen".