10521204253 has 4 divisors (see below), whose sum is σ = 12024233440. Its totient is φ = 9018175068.

The previous prime is 10521204247. The next prime is 10521204257. The reversal of 10521204253 is 35240212501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 10521204253 - 2²¹ = 10519107101 is a prime.

It is a super-2 number, since 2×10521204253² (a number of 21 digits) 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 (10521204257) 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, 751514583 + ... + 751514596.

It is an arithmetic number, because the mean of its divisors is an integer number (3006058360).

Almost surely, 2^10521204253 is an apocalyptic number.

It is an amenable number.

10521204253 is a deficient number, since it is larger than the sum of its proper divisors (1503029187).

10521204253 is an equidigital number, since it uses as much as digits as its factorization.

10521204253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1503029186.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 10521204253 its reverse (35240212501), we get a palindrome (45761416754).

The spelling of 10521204253 in words is "ten billion, five hundred twenty-one million, two hundred four thousand, two hundred fifty-three".