104666221 has 4 divisors (see below), whose sum is σ = 114181344. Its totient is φ = 95151100.

The previous prime is 104666207. The next prime is 104666273. The reversal of 104666221 is 122666401.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 104666221 - 2⁵ = 104666189 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 104666221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104666291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4757545 + ... + 4757566.

It is an arithmetic number, because the mean of its divisors is an integer number (28545336).

Almost surely, 2^104666221 is an apocalyptic number.

104666221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

104666221 is a deficient number, since it is larger than the sum of its proper divisors (9515123).

104666221 is an equidigital number, since it uses as much as digits as its factorization.

104666221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9515122.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 104666221 is about 10230.6510545517. The cubic root of 104666221 is about 471.2689730557.

The spelling of 104666221 in words is "one hundred four million, six hundred sixty-six thousand, two hundred twenty-one".