20104424111 has 4 divisors (see below), whose sum is σ = 21287037312. Its totient is φ = 18921810912.

The previous prime is 20104424101. The next prime is 20104424147. The reversal of 20104424111 is 11142440102.

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

It is a cyclic number.

It is not a de Polignac number, because 20104424111 - 2⁶ = 20104424047 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 (20104424101) 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, 591306575 + ... + 591306608.

It is an arithmetic number, because the mean of its divisors is an integer number (5321759328).

Almost surely, 2^20104424111 is an apocalyptic number.

20104424111 is a deficient number, since it is larger than the sum of its proper divisors (1182613201).

20104424111 is a wasteful number, since it uses less digits than its factorization.

20104424111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182613200.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 20104424111 its reverse (11142440102), we get a palindrome (31246864213).

The spelling of 20104424111 in words is "twenty billion, one hundred four million, four hundred twenty-four thousand, one hundred eleven".