22230643 has 2 divisors, whose sum is σ = 22230644. Its totient is φ = 22230642.

The previous prime is 22230623. The next prime is 22230661. The reversal of 22230643 is 34603222.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22230643 is a prime.

It is not a weakly prime, because it can be changed into another prime (22230623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11115321 + 11115322.

It is an arithmetic number, because the mean of its divisors is an integer number (11115322).

Almost surely, 2^22230643 is an apocalyptic number.

22230643 is a deficient number, since it is larger than the sum of its proper divisors (1).

22230643 is an equidigital number, since it uses as much as digits as its factorization.

22230643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 22230643 is about 4714.9382816745. The cubic root of 22230643 is about 281.1797290779.

Adding to 22230643 its reverse (34603222), we get a palindrome (56833865).

The spelling of 22230643 in words is "twenty-two million, two hundred thirty thousand, six hundred forty-three".