222220121000209 has 2 divisors, whose sum is σ = 222220121000210. Its totient is φ = 222220121000208.

The previous prime is 222220121000201. The next prime is 222220121000233. The reversal of 222220121000209 is 902000121022222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115765290887184 + 106454830113025 = 10759428^2 + 10317695^2 .

It is a cyclic number.

It is not a de Polignac number, because 222220121000209 - 2³ = 222220121000201 is a prime.

It is not a weakly prime, because it can be changed into another prime (222220121000201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111110060500104 + 111110060500105.

It is an arithmetic number, because the mean of its divisors is an integer number (111110060500105).

Almost surely, 2^{222220121000209} is an apocalyptic number.

It is an amenable number.

222220121000209 is a deficient number, since it is larger than the sum of its proper divisors (1).

222220121000209 is an equidigital number, since it uses as much as digits as its factorization.

222220121000209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 25.

The spelling of 222220121000209 in words is "two hundred twenty-two trillion, two hundred twenty billion, one hundred twenty-one million, two hundred nine", and thus it is an aban number.