10521353103 has 4 divisors (see below), whose sum is σ = 14028470808. Its totient is φ = 7014235400.

The previous prime is 10521353093. The next prime is 10521353173. The reversal of 10521353103 is 30135312501.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10521353103 - 2⁶ = 10521353039 is a prime.

It is a super-2 number, since 2×10521353103² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10521353173) 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, 1753558848 + ... + 1753558853.

It is an arithmetic number, because the mean of its divisors is an integer number (3507117702).

Almost surely, 2^10521353103 is an apocalyptic number.

10521353103 is a deficient number, since it is larger than the sum of its proper divisors (3507117705).

10521353103 is an equidigital number, since it uses as much as digits as its factorization.

10521353103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3507117704.

The product of its (nonzero) digits is 1350, while the sum is 24.

Adding to 10521353103 its reverse (30135312501), we get a palindrome (40656665604).

The spelling of 10521353103 in words is "ten billion, five hundred twenty-one million, three hundred fifty-three thousand, one hundred three".