104256106221 has 4 divisors (see below), whose sum is σ = 139008141632. Its totient is φ = 69504070812.

The previous prime is 104256106211. The next prime is 104256106249. The reversal of 104256106221 is 122601652401.

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 104256106221 - 2⁷ = 104256106093 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104256106211) 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, 17376017701 + ... + 17376017706.

It is an arithmetic number, because the mean of its divisors is an integer number (34752035408).

Almost surely, 2^104256106221 is an apocalyptic number.

It is an amenable number.

104256106221 is a deficient number, since it is larger than the sum of its proper divisors (34752035411).

104256106221 is an equidigital number, since it uses as much as digits as its factorization.

104256106221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34752035410.

The product of its (nonzero) digits is 5760, while the sum is 30.

Adding to 104256106221 its reverse (122601652401), we get a palindrome (226857758622).

The spelling of 104256106221 in words is "one hundred four billion, two hundred fifty-six million, one hundred six thousand, two hundred twenty-one".