212222200055809 has 2 divisors, whose sum is σ = 212222200055810. Its totient is φ = 212222200055808.

The previous prime is 212222200055729. The next prime is 212222200055813. The reversal of 212222200055809 is 908550002222212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 186625653210000 + 25596546845809 = 13661100^2 + 5059303^2 .

It is a cyclic number.

It is not a de Polignac number, because 212222200055809 - 2²⁵ = 212222166501377 is a prime.

It is not a weakly prime, because it can be changed into another prime (212222200055849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106111100027904 + 106111100027905.

It is an arithmetic number, because the mean of its divisors is an integer number (106111100027905).

Almost surely, 2^{212222200055809} is an apocalyptic number.

It is an amenable number.

212222200055809 is a deficient number, since it is larger than the sum of its proper divisors (1).

212222200055809 is an equidigital number, since it uses as much as digits as its factorization.

212222200055809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 212222200055809 in words is "two hundred twelve trillion, two hundred twenty-two billion, two hundred million, fifty-five thousand, eight hundred nine".