1222222222189 has 2 divisors, whose sum is σ = 1222222222190. Its totient is φ = 1222222222188.

The previous prime is 1222222222139. The next prime is 1222222222211. The reversal of 1222222222189 is 9812222222221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1174713480964 + 47508741225 = 1083842^2 + 217965^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222222222189 - 2²⁷ = 1222088004461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222222222139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611111111094 + 611111111095.

It is an arithmetic number, because the mean of its divisors is an integer number (611111111095).

Almost surely, 2^{1222222222189} is an apocalyptic number.

It is an amenable number.

1222222222189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222222222189 is an equidigital number, since it uses as much as digits as its factorization.

1222222222189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36864, while the sum is 37.

The spelling of 1222222222189 in words is "one trillion, two hundred twenty-two billion, two hundred twenty-two million, two hundred twenty-two thousand, one hundred eighty-nine".