21110201220103 has 64 divisors (see below), whose sum is σ = 23697361244160. Its totient is φ = 18709572575232.

The previous prime is 21110201220049. The next prime is 21110201220127. The reversal of 21110201220103 is 30102210201112.

It is a de Polignac number, because none of the positive numbers 2^k-21110201220103 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 (21110201223103) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11839708150 + ... + 11839709932.

It is an arithmetic number, because the mean of its divisors is an integer number (370271269440).

Almost surely, 2^{21110201220103} is an apocalyptic number.

21110201220103 is a deficient number, since it is larger than the sum of its proper divisors (2587160024057).

21110201220103 is a wasteful number, since it uses less digits than its factorization.

21110201220103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3376.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 21110201220103 its reverse (30102210201112), we get a palindrome (51212411421215).

The spelling of 21110201220103 in words is "twenty-one trillion, one hundred ten billion, two hundred one million, two hundred twenty thousand, one hundred three".