104243113021 has 4 divisors (see below), whose sum is σ = 107060494492. Its totient is φ = 101425731552.

The previous prime is 104243113001. The next prime is 104243113133. The reversal of 104243113021 is 120311342401.

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 62769790521 + 41473322500 = 250539^2 + 203650^2 .

It is a cyclic number.

It is not a de Polignac number, because 104243113021 - 2⁷ = 104243112893 is a prime.

It is a super-2 number, since 2×104243113021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 104243112983 and 104243113001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104243113001) 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, 1408690680 + ... + 1408690753.

It is an arithmetic number, because the mean of its divisors is an integer number (26765123623).

Almost surely, 2^104243113021 is an apocalyptic number.

It is an amenable number.

104243113021 is a deficient number, since it is larger than the sum of its proper divisors (2817381471).

104243113021 is an equidigital number, since it uses as much as digits as its factorization.

104243113021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2817381470.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 104243113021 its reverse (120311342401), we get a palindrome (224554455422).

The spelling of 104243113021 in words is "one hundred four billion, two hundred forty-three million, one hundred thirteen thousand, twenty-one".