22231219 has 2 divisors, whose sum is σ = 22231220. Its totient is φ = 22231218.

The previous prime is 22231199. The next prime is 22231241. The reversal of 22231219 is 91213222.

It is an a-pointer prime, because the next prime (22231241) can be obtained adding 22231219 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22231219 - 2¹⁷ = 22100147 is a prime.

It is a super-2 number, since 2×22231219² = 988454196451922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22231219.

It is not a weakly prime, because it can be changed into another prime (22232219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11115609 + 11115610.

It is an arithmetic number, because the mean of its divisors is an integer number (11115610).

Almost surely, 2^22231219 is an apocalyptic number.

22231219 is a deficient number, since it is larger than the sum of its proper divisors (1).

22231219 is an equidigital number, since it uses as much as digits as its factorization.

22231219 is an odious number, because the sum of its binary digits is odd.

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

The square root of 22231219 is about 4714.9993637327. Note that the first 3 decimals coincide. The cubic root of 22231219 is about 281.1821575295.

The spelling of 22231219 in words is "twenty-two million, two hundred thirty-one thousand, two hundred nineteen".