1222471443 has 4 divisors (see below), whose sum is σ = 1629961928. Its totient is φ = 814980960.

The previous prime is 1222471441. The next prime is 1222471451. The reversal of 1222471443 is 3441742221.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1222471443 - 2¹ = 1222471441 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1222471443.

It is not an unprimeable number, because it can be changed into a prime (1222471441) 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 in 3 ways as a sum of consecutive naturals, for example, 203745238 + ... + 203745243.

It is an arithmetic number, because the mean of its divisors is an integer number (407490482).

Almost surely, 2^1222471443 is an apocalyptic number.

1222471443 is a deficient number, since it is larger than the sum of its proper divisors (407490485).

1222471443 is an equidigital number, since it uses as much as digits as its factorization.

1222471443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407490484.

The product of its digits is 10752, while the sum is 30.

The square root of 1222471443 is about 34963.8590976454. The cubic root of 1222471443 is about 1069.2507763507.

The spelling of 1222471443 in words is "one billion, two hundred twenty-two million, four hundred seventy-one thousand, four hundred forty-three".