22231203209 has 2 divisors, whose sum is σ = 22231203210. Its totient is φ = 22231203208.

The previous prime is 22231203199. The next prime is 22231203217. The reversal of 22231203209 is 90230213222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16570897984 + 5660305225 = 128728^2 + 75235^2 .

It is a cyclic number.

It is not a de Polignac number, because 22231203209 - 2⁴ = 22231203193 is a prime.

It is a super-2 number, since 2×22231203209² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22231203109) 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, 11115601604 + 11115601605.

It is an arithmetic number, because the mean of its divisors is an integer number (11115601605).

Almost surely, 2^22231203209 is an apocalyptic number.

It is an amenable number.

22231203209 is a deficient number, since it is larger than the sum of its proper divisors (1).

22231203209 is an equidigital number, since it uses as much as digits as its factorization.

22231203209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 26.

The spelling of 22231203209 in words is "twenty-two billion, two hundred thirty-one million, two hundred three thousand, two hundred nine".