10253213521 has 4 divisors (see below), whose sum is σ = 10253434932. Its totient is φ = 10252992112.

The previous prime is 10253213497. The next prime is 10253213533. The reversal of 10253213521 is 12531235201.

10253213521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3806890000 + 6446323521 = 61700^2 + 80289^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10253213521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10253213591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11770 + ... + 143683.

It is an arithmetic number, because the mean of its divisors is an integer number (2563358733).

Almost surely, 2^10253213521 is an apocalyptic number.

It is an amenable number.

10253213521 is a deficient number, since it is larger than the sum of its proper divisors (221411).

10253213521 is an equidigital number, since it uses as much as digits as its factorization.

10253213521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221410.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 10253213521 its reverse (12531235201), we get a palindrome (22784448722).

The spelling of 10253213521 in words is "ten billion, two hundred fifty-three million, two hundred thirteen thousand, five hundred twenty-one".