21014103 has 16 divisors (see below), whose sum is σ = 30805632. Its totient is φ = 12636000.

The previous prime is 21014101. The next prime is 21014131. The reversal of 21014103 is 30141012.

It is a happy number.

It is not a de Polignac number, because 21014103 - 2¹ = 21014101 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21014101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1893 + ... + 6753.

It is an arithmetic number, because the mean of its divisors is an integer number (1925352).

Almost surely, 2^21014103 is an apocalyptic number.

21014103 is a deficient number, since it is larger than the sum of its proper divisors (9791529).

21014103 is a wasteful number, since it uses less digits than its factorization.

21014103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5006.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 21014103 is about 4584.1142001482. The cubic root of 21014103 is about 275.9541643061.

Adding to 21014103 its reverse (30141012), we get a palindrome (51155115).

The spelling of 21014103 in words is "twenty-one million, fourteen thousand, one hundred three".