2021100011103 has 4 divisors (see below), whose sum is σ = 2694800014808. Its totient is φ = 1347400007400.

The previous prime is 2021100011101. The next prime is 2021100011131. The reversal of 2021100011103 is 3011100011202.

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

It is not a de Polignac number, because 2021100011103 - 2¹ = 2021100011101 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 (2021100011101) 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, 336850001848 + ... + 336850001853.

It is an arithmetic number, because the mean of its divisors is an integer number (673700003702).

Almost surely, 2^{2021100011103} is an apocalyptic number.

2021100011103 is a deficient number, since it is larger than the sum of its proper divisors (673700003705).

2021100011103 is an equidigital number, since it uses as much as digits as its factorization.

2021100011103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673700003704.

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

Adding to 2021100011103 its reverse (3011100011202), we get a palindrome (5032200022305).

Subtracting 2021100011103 from its reverse (3011100011202), we obtain a palindrome (990000000099).

The spelling of 2021100011103 in words is "two trillion, twenty-one billion, one hundred million, eleven thousand, one hundred three".