1222352189 has 2 divisors, whose sum is σ = 1222352190. Its totient is φ = 1222352188.

The previous prime is 1222352177. The next prime is 1222352237. The reversal of 1222352189 is 9812532221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1005968089 + 216384100 = 31717^2 + 14710^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222352189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222352129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611176094 + 611176095.

It is an arithmetic number, because the mean of its divisors is an integer number (611176095).

Almost surely, 2^1222352189 is an apocalyptic number.

It is an amenable number.

1222352189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222352189 is an equidigital number, since it uses as much as digits as its factorization.

1222352189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 35.

The square root of 1222352189 is about 34962.1536665006. The cubic root of 1222352189 is about 1069.2160061919.

The spelling of 1222352189 in words is "one billion, two hundred twenty-two million, three hundred fifty-two thousand, one hundred eighty-nine".