104134444221 has 4 divisors (see below), whose sum is σ = 138845925632. Its totient is φ = 69422962812.

The previous prime is 104134444171. The next prime is 104134444247. The reversal of 104134444221 is 122444431401.

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, and also an emirpimes, since its reverse is a distinct semiprime: 122444431401 = 3 ⋅40814810467.

It is not a de Polignac number, because 104134444221 - 2⁹ = 104134443709 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 (104134444621) 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, 17355740701 + ... + 17355740706.

It is an arithmetic number, because the mean of its divisors is an integer number (34711481408).

Almost surely, 2^104134444221 is an apocalyptic number.

It is an amenable number.

104134444221 is a deficient number, since it is larger than the sum of its proper divisors (34711481411).

104134444221 is an equidigital number, since it uses as much as digits as its factorization.

104134444221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34711481410.

The product of its (nonzero) digits is 12288, while the sum is 30.

Adding to 104134444221 its reverse (122444431401), we get a palindrome (226578875622).

The spelling of 104134444221 in words is "one hundred four billion, one hundred thirty-four million, four hundred forty-four thousand, two hundred twenty-one".