212330330309 has 2 divisors, whose sum is σ = 212330330310. Its totient is φ = 212330330308.

The previous prime is 212330330297. The next prime is 212330330323. The reversal of 212330330309 is 903033033212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 146241232225 + 66089098084 = 382415^2 + 257078^2 .

It is a cyclic number.

It is not a de Polignac number, because 212330330309 - 2³² = 208035363013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212330330389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106165165154 + 106165165155.

It is an arithmetic number, because the mean of its divisors is an integer number (106165165155).

Almost surely, 2^212330330309 is an apocalyptic number.

It is an amenable number.

212330330309 is a deficient number, since it is larger than the sum of its proper divisors (1).

212330330309 is an equidigital number, since it uses as much as digits as its factorization.

212330330309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 29.

The spelling of 212330330309 in words is "two hundred twelve billion, three hundred thirty million, three hundred thirty thousand, three hundred nine".