1222345443 has 32 divisors (see below), whose sum is σ = 1808884224. Its totient is φ = 728000000.

The previous prime is 1222345321. The next prime is 1222345451. The reversal of 1222345443 is 3445432221.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222345443 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1222345443.

It is not an unprimeable number, because it can be changed into a prime (1222345463) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 938893 + ... + 940193.

It is an arithmetic number, because the mean of its divisors is an integer number (56527632).

Almost surely, 2^1222345443 is an apocalyptic number.

1222345443 is a deficient number, since it is larger than the sum of its proper divisors (586538781).

1222345443 is a wasteful number, since it uses less digits than its factorization.

1222345443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1787.

The product of its digits is 23040, while the sum is 30.

The square root of 1222345443 is about 34962.0571906174. The cubic root of 1222345443 is about 1069.2140392344.

Adding to 1222345443 its reverse (3445432221), we get a palindrome (4667777664).

The spelling of 1222345443 in words is "one billion, two hundred twenty-two million, three hundred forty-five thousand, four hundred forty-three".