222120220109 has 2 divisors, whose sum is σ = 222120220110. Its totient is φ = 222120220108.

The previous prime is 222120220061. The next prime is 222120220111. The reversal of 222120220109 is 901022021222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 181710375625 + 40409844484 = 426275^2 + 201022^2 .

It is a cyclic number.

It is not a de Polignac number, because 222120220109 - 2¹² = 222120216013 is a prime.

Together with 222120220111, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222120220159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111060110054 + 111060110055.

It is an arithmetic number, because the mean of its divisors is an integer number (111060110055).

Almost surely, 2^222120220109 is an apocalyptic number.

It is an amenable number.

222120220109 is a deficient number, since it is larger than the sum of its proper divisors (1).

222120220109 is an equidigital number, since it uses as much as digits as its factorization.

222120220109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

The spelling of 222120220109 in words is "two hundred twenty-two billion, one hundred twenty million, two hundred twenty thousand, one hundred nine".