212413433209 has 2 divisors, whose sum is σ = 212413433210. Its totient is φ = 212413433208.

The previous prime is 212413433191. The next prime is 212413433233. The reversal of 212413433209 is 902334314212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106453417984 + 105960015225 = 326272^2 + 325515^2 .

It is a cyclic number.

It is not a de Polignac number, because 212413433209 - 2¹¹ = 212413431161 is a prime.

It is not a weakly prime, because it can be changed into another prime (212413433269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106206716604 + 106206716605.

It is an arithmetic number, because the mean of its divisors is an integer number (106206716605).

Almost surely, 2^212413433209 is an apocalyptic number.

It is an amenable number.

212413433209 is a deficient number, since it is larger than the sum of its proper divisors (1).

212413433209 is an equidigital number, since it uses as much as digits as its factorization.

212413433209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 34.

The spelling of 212413433209 in words is "two hundred twelve billion, four hundred thirteen million, four hundred thirty-three thousand, two hundred nine".