12598221 has 8 divisors (see below), whose sum is σ = 16824160. Its totient is φ = 8385552.

The previous prime is 12598213. The next prime is 12598231. The reversal of 12598221 is 12289521.

12598221 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 12598221 - 2³ = 12598213 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 (12598231) 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, 835 + ... + 5088.

It is an arithmetic number, because the mean of its divisors is an integer number (2103020).

Almost surely, 2^12598221 is an apocalyptic number.

It is an amenable number.

12598221 is a deficient number, since it is larger than the sum of its proper divisors (4225939).

12598221 is an equidigital number, since it uses as much as digits as its factorization.

12598221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6635.

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

The square root of 12598221 is about 3549.3972727775. The cubic root of 12598221 is about 232.6857251114.

It can be divided in two parts, 125 and 98221, that added together give a triangular number (98346 = T₄₄₃).

The spelling of 12598221 in words is "twelve million, five hundred ninety-eight thousand, two hundred twenty-one".