222120212189 has 2 divisors, whose sum is σ = 222120212190. Its totient is φ = 222120212188.

The previous prime is 222120212173. The next prime is 222120212201. The reversal of 222120212189 is 981212021222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 221624392900 + 495819289 = 470770^2 + 22267^2 .

It is a cyclic number.

It is not a de Polignac number, because 222120212189 - 2⁴ = 222120212173 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222120212159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111060106094 + 111060106095.

It is an arithmetic number, because the mean of its divisors is an integer number (111060106095).

Almost surely, 2^222120212189 is an apocalyptic number.

It is an amenable number.

222120212189 is a deficient number, since it is larger than the sum of its proper divisors (1).

222120212189 is an equidigital number, since it uses as much as digits as its factorization.

222120212189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 32.

The spelling of 222120212189 in words is "two hundred twenty-two billion, one hundred twenty million, two hundred twelve thousand, one hundred eighty-nine".