20001011103 has 10 divisors (see below), whose sum is σ = 29878053744. Its totient is φ = 13334007348.

The previous prime is 20001011089. The next prime is 20001011141. The reversal of 20001011103 is 30111010002.

It is not a de Polignac number, because 20001011103 - 2⁸ = 20001010847 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001211103) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 123462951 + ... + 123463112.

Almost surely, 2^20001011103 is an apocalyptic number.

20001011103 is a deficient number, since it is larger than the sum of its proper divisors (9877042641).

20001011103 is an equidigital number, since it uses as much as digits as its factorization.

20001011103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246926075 (or 246926066 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

Adding to 20001011103 its reverse (30111010002), we get a palindrome (50112021105).

The spelling of 20001011103 in words is "twenty billion, one million, eleven thousand, one hundred three".