12994221 has 8 divisors (see below), whose sum is σ = 17356864. Its totient is φ = 8647200.

The previous prime is 12994151. The next prime is 12994229. The reversal of 12994221 is 12249921.

It is a happy number.

12994221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12994221 - 2¹⁴ = 12977837 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 (12994229) 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, 1801 + ... + 5406.

It is an arithmetic number, because the mean of its divisors is an integer number (2169608).

Almost surely, 2^12994221 is an apocalyptic number.

It is an amenable number.

12994221 is a deficient number, since it is larger than the sum of its proper divisors (4362643).

12994221 is an equidigital number, since it uses as much as digits as its factorization.

12994221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7811.

The product of its digits is 2592, while the sum is 30.

The square root of 12994221 is about 3604.7497832721. The cubic root of 12994221 is about 235.0986216511.

The spelling of 12994221 in words is "twelve million, nine hundred ninety-four thousand, two hundred twenty-one".