104021131012321 has 4 divisors (see below), whose sum is σ = 107608066564500. Its totient is φ = 100434195460144.

The previous prime is 104021131012303. The next prime is 104021131012327. The reversal of 104021131012321 is 123210131120401.

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 82993266084096 + 21027864928225 = 9110064^2 + 4585615^2 .

It is a cyclic number.

It is not a de Polignac number, because 104021131012321 - 2²⁷ = 104020996794593 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 104021131012292 and 104021131012301.

It is not an unprimeable number, because it can be changed into a prime (104021131012327) 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, 1793467776046 + ... + 1793467776103.

It is an arithmetic number, because the mean of its divisors is an integer number (26902016641125).

Almost surely, 2^{104021131012321} is an apocalyptic number.

It is an amenable number.

104021131012321 is a deficient number, since it is larger than the sum of its proper divisors (3586935552179).

104021131012321 is an equidigital number, since it uses as much as digits as its factorization.

104021131012321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3586935552178.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 104021131012321 its reverse (123210131120401), we get a palindrome (227231262132722).

The spelling of 104021131012321 in words is "one hundred four trillion, twenty-one billion, one hundred thirty-one million, twelve thousand, three hundred twenty-one".