20011103 has 8 divisors (see below), whose sum is σ = 22930080. Its totient is φ = 17107200.

The previous prime is 20011099. The next prime is 20011139. The reversal of 20011103 is 30111002.

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

It is a cyclic number.

It is not a de Polignac number, because 20011103 - 2² = 20011099 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 (20011153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 758 + ... + 6371.

It is an arithmetic number, because the mean of its divisors is an integer number (2866260).

Almost surely, 2^20011103 is an apocalyptic number.

20011103 is a deficient number, since it is larger than the sum of its proper divisors (2918977).

20011103 is an equidigital number, since it uses as much as digits as its factorization.

20011103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7537.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 20011103 is about 4473.3771359008. The cubic root of 20011103 is about 271.4919826652.

Adding to 20011103 its reverse (30111002), we get a palindrome (50122105).

The spelling of 20011103 in words is "twenty million, eleven thousand, one hundred three".