21296103 has 8 divisors (see below), whose sum is σ = 28660608. Its totient is φ = 14064504.

The previous prime is 21296083. The next prime is 21296111. The reversal of 21296103 is 30169212.

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

It is not a de Polignac number, because 21296103 - 2⁹ = 21295591 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 (21296173) 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, 32851 + ... + 33492.

It is an arithmetic number, because the mean of its divisors is an integer number (3582576).

Almost surely, 2^21296103 is an apocalyptic number.

21296103 is a deficient number, since it is larger than the sum of its proper divisors (7364505).

21296103 is a wasteful number, since it uses less digits than its factorization.

21296103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66453.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 21296103 is about 4614.7700917814. The cubic root of 21296103 is about 277.1830778490.

The spelling of 21296103 in words is "twenty-one million, two hundred ninety-six thousand, one hundred three".