12228893221 has 8 divisors (see below), whose sum is σ = 12908992320. Its totient is φ = 11552441472.

The previous prime is 12228893219. The next prime is 12228893227. The reversal of 12228893221 is 12239882221.

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

It is a cyclic number.

It is not a de Polignac number, because 12228893221 - 2¹ = 12228893219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12228893227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 904945 + ... + 918358.

It is an arithmetic number, because the mean of its divisors is an integer number (1613624040).

Almost surely, 2^12228893221 is an apocalyptic number.

It is an amenable number.

12228893221 is a deficient number, since it is larger than the sum of its proper divisors (680099099).

12228893221 is a wasteful number, since it uses less digits than its factorization.

12228893221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1823675.

The product of its digits is 55296, while the sum is 40.

The spelling of 12228893221 in words is "twelve billion, two hundred twenty-eight million, eight hundred ninety-three thousand, two hundred twenty-one".