21110223220103 has 8 divisors (see below), whose sum is σ = 21666034905840. Its totient is φ = 20561491938240.

The previous prime is 21110223220027. The next prime is 21110223220127. The reversal of 21110223220103 is 30102232201112.

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 21110223220103 - 2⁴² = 16712176708999 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 (21110223220403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1770094928 + ... + 1770106853.

It is an arithmetic number, because the mean of its divisors is an integer number (2708254363230).

Almost surely, 2^{21110223220103} is an apocalyptic number.

21110223220103 is a deficient number, since it is larger than the sum of its proper divisors (555811685737).

21110223220103 is an equidigital number, since it uses as much as digits as its factorization.

21110223220103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3540201937.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21110223220103 its reverse (30102232201112), we get a palindrome (51212455421215).

The spelling of 21110223220103 in words is "twenty-one trillion, one hundred ten billion, two hundred twenty-three million, two hundred twenty thousand, one hundred three".