223212309109 has 2 divisors, whose sum is σ = 223212309110. Its totient is φ = 223212309108.

The previous prime is 223212309043. The next prime is 223212309113. The reversal of 223212309109 is 901903212322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 215379528100 + 7832781009 = 464090^2 + 88503^2 .

It is a cyclic number.

It is not a de Polignac number, because 223212309109 - 2⁷ = 223212308981 is a prime.

It is a super-3 number, since 3×223212309109³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223212339109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111606154554 + 111606154555.

It is an arithmetic number, because the mean of its divisors is an integer number (111606154555).

Almost surely, 2^223212309109 is an apocalyptic number.

It is an amenable number.

223212309109 is a deficient number, since it is larger than the sum of its proper divisors (1).

223212309109 is an equidigital number, since it uses as much as digits as its factorization.

223212309109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 34.

The spelling of 223212309109 in words is "two hundred twenty-three billion, two hundred twelve million, three hundred nine thousand, one hundred nine".