21110201103 has 8 divisors (see below), whose sum is σ = 28148830000. Its totient is φ = 14072519808.

The previous prime is 21110201089. The next prime is 21110201141. The reversal of 21110201103 is 30110201112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21110201103 - 2²⁴ = 21093423887 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 (21110201183) 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, 183178 + ... + 275271.

It is an arithmetic number, because the mean of its divisors is an integer number (3518603750).

Almost surely, 2^21110201103 is an apocalyptic number.

21110201103 is a deficient number, since it is larger than the sum of its proper divisors (7038628897).

21110201103 is a wasteful number, since it uses less digits than its factorization.

21110201103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473801.

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

Adding to 21110201103 its reverse (30110201112), we get a palindrome (51220402215).

Subtracting 21110201103 from its reverse (30110201112), we obtain a palindrome (9000000009).

The spelling of 21110201103 in words is "twenty-one billion, one hundred ten million, two hundred one thousand, one hundred three".