210101222189 has 2 divisors, whose sum is σ = 210101222190. Its totient is φ = 210101222188.

The previous prime is 210101222171. The next prime is 210101222203. The reversal of 210101222189 is 981222101012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 210098473225 + 2748964 = 458365^2 + 1658^2 .

It is a cyclic number.

It is not a de Polignac number, because 210101222189 - 2²⁸ = 209832786733 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 (210101252189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105050611094 + 105050611095.

It is an arithmetic number, because the mean of its divisors is an integer number (105050611095).

Almost surely, 2^210101222189 is an apocalyptic number.

It is an amenable number.

210101222189 is a deficient number, since it is larger than the sum of its proper divisors (1).

210101222189 is an equidigital number, since it uses as much as digits as its factorization.

210101222189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 29.

The spelling of 210101222189 in words is "two hundred ten billion, one hundred one million, two hundred twenty-two thousand, one hundred eighty-nine".