10520443221 has 8 divisors (see below), whose sum is σ = 14028726624. Its totient is φ = 7012894320.

The previous prime is 10520443201. The next prime is 10520443273. The reversal of 10520443221 is 12234402501.

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

It is not a de Polignac number, because 10520443221 - 2⁵ = 10520443189 is a prime.

It is a super-2 number, since 2×10520443221² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10520443191 and 10520443200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10520443201) 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, 149286 + ... + 208151.

It is an arithmetic number, because the mean of its divisors is an integer number (1753590828).

Almost surely, 2^10520443221 is an apocalyptic number.

It is an amenable number.

10520443221 is a deficient number, since it is larger than the sum of its proper divisors (3508283403).

10520443221 is an equidigital number, since it uses as much as digits as its factorization.

10520443221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367251.

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 10520443221 its reverse (12234402501), we get a palindrome (22754845722).

The spelling of 10520443221 in words is "ten billion, five hundred twenty million, four hundred forty-three thousand, two hundred twenty-one".