104340200021 has 4 divisors (see below), whose sum is σ = 104341855500. Its totient is φ = 104338544544.

The previous prime is 104340200017. The next prime is 104340200033. The reversal of 104340200021 is 120002043401.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51089560900 + 53250639121 = 226030^2 + 230761^2 .

It is a cyclic number.

It is not a de Polignac number, because 104340200021 - 2² = 104340200017 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 (104340200621) 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, 729296 + ... + 860553.

It is an arithmetic number, because the mean of its divisors is an integer number (26085463875).

Almost surely, 2^104340200021 is an apocalyptic number.

It is an amenable number.

104340200021 is a deficient number, since it is larger than the sum of its proper divisors (1655479).

104340200021 is an equidigital number, since it uses as much as digits as its factorization.

104340200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1655478.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 104340200021 its reverse (120002043401), we get a palindrome (224342243422).

The spelling of 104340200021 in words is "one hundred four billion, three hundred forty million, two hundred thousand, twenty-one".