20104404101 has 8 divisors (see below), whose sum is σ = 20649603864. Its totient is φ = 19559301120.

The previous prime is 20104404097. The next prime is 20104404149. The reversal of 20104404101 is 10140440102.

It is a Cunningham number, because it is equal to 141790²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 7108176100 + 12996228001 = 84310^2 + 114001^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20104404101 - 2² = 20104404097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20104404101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20104404601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 641861 + ... + 672453.

It is an arithmetic number, because the mean of its divisors is an integer number (2581200483).

Almost surely, 2^20104404101 is an apocalyptic number.

It is an amenable number.

20104404101 is a deficient number, since it is larger than the sum of its proper divisors (545199763).

20104404101 is a wasteful number, since it uses less digits than its factorization.

20104404101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48391.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20104404101 its reverse (10140440102), we get a palindrome (30244844203).

The spelling of 20104404101 in words is "twenty billion, one hundred four million, four hundred four thousand, one hundred one".