20010104111 has 4 divisors (see below), whose sum is σ = 20082343032. Its totient is φ = 19937865192.

The previous prime is 20010104077. The next prime is 20010104123. The reversal of 20010104111 is 11140101002.

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 20010104111 - 2⁶ = 20010104047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20010104092 and 20010104101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010100111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36119045 + ... + 36119598.

It is an arithmetic number, because the mean of its divisors is an integer number (5020585758).

Almost surely, 2^20010104111 is an apocalyptic number.

20010104111 is a deficient number, since it is larger than the sum of its proper divisors (72238921).

20010104111 is an equidigital number, since it uses as much as digits as its factorization.

20010104111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72238920.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20010104111 its reverse (11140101002), we get a palindrome (31150205113).

The spelling of 20010104111 in words is "twenty billion, ten million, one hundred four thousand, one hundred eleven".