21500112200103 has 96 divisors (see below), whose sum is σ = 36122246784000. Its totient is φ = 12223187463168.

The previous prime is 21500112200093. The next prime is 21500112200123. The reversal of 21500112200103 is 30100221100512.

21500112200103 is a `hidden beast` number, since 21 + 500 + 112 + 20 + 0 + 10 + 3 = 666.

It is not a de Polignac number, because 21500112200103 - 2¹⁰ = 21500112199079 is a prime.

It is a super-2 number, since 2×21500112200103² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21500112200123) 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 95 ways as a sum of consecutive naturals, for example, 946004926 + ... + 946027652.

It is an arithmetic number, because the mean of its divisors is an integer number (376273404000).

Almost surely, 2^{21500112200103} is an apocalyptic number.

21500112200103 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21500112200103 is a deficient number, since it is larger than the sum of its proper divisors (14622134583897).

21500112200103 is a wasteful number, since it uses less digits than its factorization.

21500112200103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36941 (or 36938 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

Adding to 21500112200103 its reverse (30100221100512), we get a palindrome (51600333300615).

The spelling of 21500112200103 in words is "twenty-one trillion, five hundred billion, one hundred twelve million, two hundred thousand, one hundred three".