1222851289 has 12 divisors (see below), whose sum is σ = 1347917760. Its totient is φ = 1108547000.

The previous prime is 1222851283. The next prime is 1222851317. The reversal of 1222851289 is 9821582221.

It is not a de Polignac number, because 1222851289 - 2⁵ = 1222851257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222851283) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29364 + ... + 57514.

It is an arithmetic number, because the mean of its divisors is an integer number (112326480).

Almost surely, 2^1222851289 is an apocalyptic number.

It is an amenable number.

1222851289 is a deficient number, since it is larger than the sum of its proper divisors (125066471).

1222851289 is a wasteful number, since it uses less digits than its factorization.

1222851289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28532 (or 28521 counting only the distinct ones).

The product of its digits is 46080, while the sum is 40.

The square root of 1222851289 is about 34969.2906562315. The cubic root of 1222851289 is about 1069.3615106542.

The spelling of 1222851289 in words is "one billion, two hundred twenty-two million, eight hundred fifty-one thousand, two hundred eighty-nine".