212144331122209 has 2 divisors, whose sum is σ = 212144331122210. Its totient is φ = 212144331122208.

The previous prime is 212144331122161. The next prime is 212144331122233. The reversal of 212144331122209 is 902221133441212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 185851054598400 + 26293276523809 = 13632720^2 + 5127697^2 .

It is a cyclic number.

It is not a de Polignac number, because 212144331122209 - 2²⁷ = 212144196904481 is a prime.

It is not a weakly prime, because it can be changed into another prime (212144331122279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106072165561104 + 106072165561105.

It is an arithmetic number, because the mean of its divisors is an integer number (106072165561105).

Almost surely, 2^{212144331122209} is an apocalyptic number.

It is an amenable number.

212144331122209 is a deficient number, since it is larger than the sum of its proper divisors (1).

212144331122209 is an equidigital number, since it uses as much as digits as its factorization.

212144331122209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 37.

The spelling of 212144331122209 in words is "two hundred twelve trillion, one hundred forty-four billion, three hundred thirty-one million, one hundred twenty-two thousand, two hundred nine".