212202212199689 has 2 divisors, whose sum is σ = 212202212199690. Its totient is φ = 212202212199688.

The previous prime is 212202212199611. The next prime is 212202212199697. The reversal of 212202212199689 is 986991212202212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 151812092652025 + 60390119547664 = 12321205^2 + 7771108^2 .

It is a cyclic number.

It is not a de Polignac number, because 212202212199689 - 2³² = 212197917232393 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (212202212198689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106101106099844 + 106101106099845.

It is an arithmetic number, because the mean of its divisors is an integer number (106101106099845).

Almost surely, 2^{212202212199689} is an apocalyptic number.

It is an amenable number.

212202212199689 is a deficient number, since it is larger than the sum of its proper divisors (1).

212202212199689 is an equidigital number, since it uses as much as digits as its factorization.

212202212199689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2239488, while the sum is 56.

The spelling of 212202212199689 in words is "two hundred twelve trillion, two hundred two billion, two hundred twelve million, one hundred ninety-nine thousand, six hundred eighty-nine".