21112122200003 has 4 divisors (see below), whose sum is σ = 21112133637720. Its totient is φ = 21112110762288.

The previous prime is 21112122199951. The next prime is 21112122200027. The reversal of 21112122200003 is 30000222121112.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 21112122200003 - 2⁸ = 21112122199747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21112122200033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2247893 + ... + 6875846.

It is an arithmetic number, because the mean of its divisors is an integer number (5278033409430).

Almost surely, 2^{21112122200003} is an apocalyptic number.

21112122200003 is a deficient number, since it is larger than the sum of its proper divisors (11437717).

21112122200003 is an equidigital number, since it uses as much as digits as its factorization.

21112122200003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11437716.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21112122200003 its reverse (30000222121112), we get a palindrome (51112344321115).

The spelling of 21112122200003 in words is "twenty-one trillion, one hundred twelve billion, one hundred twenty-two million, two hundred thousand, three".