12859221 has 8 divisors (see below), whose sum is σ = 17209984. Its totient is φ = 8540640.

The previous prime is 12859211. The next prime is 12859229. The reversal of 12859221 is 12295821.

12859221 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 12859221 - 2¹³ = 12851029 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 (12859229) 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, 7096 + ... + 8721.

It is an arithmetic number, because the mean of its divisors is an integer number (2151248).

Almost surely, 2^12859221 is an apocalyptic number.

It is an amenable number.

12859221 is a deficient number, since it is larger than the sum of its proper divisors (4350763).

12859221 is a wasteful number, since it uses less digits than its factorization.

12859221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16091.

The product of its digits is 2880, while the sum is 30.

The square root of 12859221 is about 3585.9755994708. The cubic root of 12859221 is about 234.2816208989.

The spelling of 12859221 in words is "twelve million, eight hundred fifty-nine thousand, two hundred twenty-one".