1222430443 has 4 divisors (see below), whose sum is σ = 1316463568. Its totient is φ = 1128397320.

The previous prime is 1222430431. The next prime is 1222430449. The reversal of 1222430443 is 3440342221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3440342221 = 2617 ⋅1314613.

It is a cyclic number.

It is not a de Polignac number, because 1222430443 - 2¹³ = 1222422251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222430449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47016543 + ... + 47016568.

It is an arithmetic number, because the mean of its divisors is an integer number (329115892).

Almost surely, 2^1222430443 is an apocalyptic number.

1222430443 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1222430443 is a deficient number, since it is larger than the sum of its proper divisors (94033125).

1222430443 is an equidigital number, since it uses as much as digits as its factorization.

1222430443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94033124.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 1222430443 is about 34963.2727730114. The cubic root of 1222430443 is about 1069.2388224868.

Adding to 1222430443 its reverse (3440342221), we get a palindrome (4662772664).

The spelling of 1222430443 in words is "one billion, two hundred twenty-two million, four hundred thirty thousand, four hundred forty-three".