12047026221 has 12 divisors (see below), whose sum is σ = 17483733280. Its totient is φ = 7993286280.

The previous prime is 12047026169. The next prime is 12047026223. The reversal of 12047026221 is 12262074021.

It is not a de Polignac number, because 12047026221 - 2⁷ = 12047026093 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 (12047026223) 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, 3170041 + ... + 3173838.

Almost surely, 2^12047026221 is an apocalyptic number.

It is an amenable number.

12047026221 is a deficient number, since it is larger than the sum of its proper divisors (5436707059).

12047026221 is a wasteful number, since it uses less digits than its factorization.

12047026221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6344096 (or 6344093 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The spelling of 12047026221 in words is "twelve billion, forty-seven million, twenty-six thousand, two hundred twenty-one".