20010211103 has 4 divisors (see below), whose sum is σ = 20010860688. Its totient is φ = 20009561520.

The previous prime is 20010211099. The next prime is 20010211127. The reversal of 20010211103 is 30111201002.

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 20010211103 - 2² = 20010211099 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 (20010211153) 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, 276158 + ... + 341003.

It is an arithmetic number, because the mean of its divisors is an integer number (5002715172).

Almost surely, 2^20010211103 is an apocalyptic number.

20010211103 is a deficient number, since it is larger than the sum of its proper divisors (649585).

20010211103 is an equidigital number, since it uses as much as digits as its factorization.

20010211103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649584.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 20010211103 its reverse (30111201002), we get a palindrome (50121412105).

The spelling of 20010211103 in words is "twenty billion, ten million, two hundred eleven thousand, one hundred three".