10521103 has 4 divisors (see below), whose sum is σ = 10534888. Its totient is φ = 10507320.

The previous prime is 10521101. The next prime is 10521107. The reversal of 10521103 is 30112501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30112501 = 31 ⋅971371.

It is a cyclic number.

It is not a de Polignac number, because 10521103 - 2¹ = 10521101 is a prime.

It is a super-2 number, since 2×10521103² = 221387216673218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10521101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5676 + ... + 7297.

It is an arithmetic number, because the mean of its divisors is an integer number (2633722).

Almost surely, 2^10521103 is an apocalyptic number.

10521103 is a deficient number, since it is larger than the sum of its proper divisors (13785).

10521103 is an equidigital number, since it uses as much as digits as its factorization.

10521103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13784.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 10521103 is about 3243.6249783229. The cubic root of 10521103 is about 219.1225588123.

Adding to 10521103 its reverse (30112501), we get a palindrome (40633604).

The spelling of 10521103 in words is "ten million, five hundred twenty-one thousand, one hundred three".