222231109 has 2 divisors, whose sum is σ = 222231110. Its totient is φ = 222231108.

The previous prime is 222231071. The next prime is 222231137. The reversal of 222231109 is 901132222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209960100 + 12271009 = 14490^2 + 3503^2 .

It is a cyclic number.

It is not a de Polignac number, because 222231109 - 2¹⁷ = 222100037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222231109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222238109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111115554 + 111115555.

It is an arithmetic number, because the mean of its divisors is an integer number (111115555).

Almost surely, 2^222231109 is an apocalyptic number.

It is an amenable number.

222231109 is a deficient number, since it is larger than the sum of its proper divisors (1).

222231109 is an equidigital number, since it uses as much as digits as its factorization.

222231109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 222231109 is about 14907.4179186068. The cubic root of 222231109 is about 605.7149383432.

It can be divided in two parts, 22223 and 1109, that added together give a palindrome (23332).

The spelling of 222231109 in words is "two hundred twenty-two million, two hundred thirty-one thousand, one hundred nine".