222120221209 has 2 divisors, whose sum is σ = 222120221210. Its totient is φ = 222120221208.

The previous prime is 222120221189. The next prime is 222120221243. The reversal of 222120221209 is 902122021222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 219356406025 + 2763815184 = 468355^2 + 52572^2 .

It is a cyclic number.

It is not a de Polignac number, because 222120221209 - 2¹³ = 222120213017 is a prime.

It is not a weakly prime, because it can be changed into another prime (222120221269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111060110604 + 111060110605.

It is an arithmetic number, because the mean of its divisors is an integer number (111060110605).

Almost surely, 2^222120221209 is an apocalyptic number.

It is an amenable number.

222120221209 is a deficient number, since it is larger than the sum of its proper divisors (1).

222120221209 is an equidigital number, since it uses as much as digits as its factorization.

222120221209 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 222120221209 in words is "two hundred twenty-two billion, one hundred twenty million, two hundred twenty-one thousand, two hundred nine".