1000222189 has 2 divisors, whose sum is σ = 1000222190. Its totient is φ = 1000222188.

The previous prime is 1000222133. The next prime is 1000222207. The reversal of 1000222189 is 9812220001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 632924964 + 367297225 = 25158^2 + 19165^2 .

It is an emirp because it is prime and its reverse (9812220001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1000222189 - 2⁷ = 1000222061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000022189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500111094 + 500111095.

It is an arithmetic number, because the mean of its divisors is an integer number (500111095).

Almost surely, 2^1000222189 is an apocalyptic number.

It is an amenable number.

1000222189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000222189 is an equidigital number, since it uses as much as digits as its factorization.

1000222189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 1000222189 is about 31626.2895231167. The cubic root of 1000222189 is about 1000.0740575153.

The spelling of 1000222189 in words is "one billion, two hundred twenty-two thousand, one hundred eighty-nine".