222120221189 has 2 divisors, whose sum is σ = 222120221190. Its totient is φ = 222120221188.

The previous prime is 222120221153. The next prime is 222120221209. The reversal of 222120221189 is 981122021222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193890508900 + 28229712289 = 440330^2 + 168017^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222120221189 is a prime.

It is a super-2 number, since 2×222120221189² (a number of 23 digits) contains 22 as substring.

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 (222120721189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111060110594 + 111060110595.

It is an arithmetic number, because the mean of its divisors is an integer number (111060110595).

Almost surely, 2^222120221189 is an apocalyptic number.

It is an amenable number.

222120221189 is a deficient number, since it is larger than the sum of its proper divisors (1).

222120221189 is an equidigital number, since it uses as much as digits as its factorization.

222120221189 is an evil number, because the sum of its binary digits is even.

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

The spelling of 222120221189 in words is "two hundred twenty-two billion, one hundred twenty million, two hundred twenty-one thousand, one hundred eighty-nine".