21110300103 has 16 divisors (see below), whose sum is σ = 29861364960. Its totient is φ = 13219639296.

The previous prime is 21110300093. The next prime is 21110300117. The reversal of 21110300103 is 30100301112.

It is not a de Polignac number, because 21110300103 - 2¹⁰ = 21110299079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21110300903) 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 15 ways as a sum of consecutive naturals, for example, 380650 + ... + 432567.

It is an arithmetic number, because the mean of its divisors is an integer number (1866335310).

Almost surely, 2^21110300103 is an apocalyptic number.

21110300103 is a deficient number, since it is larger than the sum of its proper divisors (8751064857).

21110300103 is a wasteful number, since it uses less digits than its factorization.

21110300103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813746.

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 21110300103 its reverse (30100301112), we get a palindrome (51210601215).

The spelling of 21110300103 in words is "twenty-one billion, one hundred ten million, three hundred thousand, one hundred three".