1222001443 has 8 divisors (see below), whose sum is σ = 1340832528. Its totient is φ = 1106717664.

The previous prime is 1222001437. The next prime is 1222001483. The reversal of 1222001443 is 3441002221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1222001443 - 2⁵ = 1222001411 is a prime.

It is a Duffinian number.

1222001443 is a modest number, since divided by 1443 gives 1222 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 1222001443.

It is not an unprimeable number, because it can be changed into a prime (1222001423) 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 in 7 ways as a sum of consecutive naturals, for example, 886105 + ... + 887482.

It is an arithmetic number, because the mean of its divisors is an integer number (167604066).

Almost surely, 2^1222001443 is an apocalyptic number.

1222001443 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1222001443 is a deficient number, since it is larger than the sum of its proper divisors (118831085).

1222001443 is a wasteful number, since it uses less digits than its factorization.

1222001443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1773653.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1222001443 is about 34957.1372254651. The cubic root of 1222001443 is about 1069.1137282187.

Adding to 1222001443 its reverse (3441002221), we get a palindrome (4663003664).

The spelling of 1222001443 in words is "one billion, two hundred twenty-two million, one thousand, four hundred forty-three".