104081221 has 4 divisors (see below), whose sum is σ = 109559200. Its totient is φ = 98603244.

The previous prime is 104081213. The next prime is 104081231. The reversal of 104081221 is 122180401.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 104081221 - 2³ = 104081213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 5477959 = 104081221 / (1 + 0 + 4 + 0 + 8 + 1 + 2 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104081231) 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, 2738961 + ... + 2738998.

It is an arithmetic number, because the mean of its divisors is an integer number (27389800).

Almost surely, 2^104081221 is an apocalyptic number.

It is an amenable number.

104081221 is a deficient number, since it is larger than the sum of its proper divisors (5477979).

104081221 is an equidigital number, since it uses as much as digits as its factorization.

104081221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5477978.

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 104081221 is about 10202.0204371487. The cubic root of 104081221 is about 470.3893273263.

The spelling of 104081221 in words is "one hundred four million, eighty-one thousand, two hundred twenty-one".