10443031221 has 16 divisors (see below), whose sum is σ = 15964041344. Its totient is φ = 5948377344.

The previous prime is 10443031177. The next prime is 10443031241. The reversal of 10443031221 is 12213034401.

It is not a de Polignac number, because 10443031221 - 2¹⁰ = 10443030197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10443031241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 787816 + ... + 800961.

It is an arithmetic number, because the mean of its divisors is an integer number (997752584).

Almost surely, 2^10443031221 is an apocalyptic number.

It is an amenable number.

10443031221 is a deficient number, since it is larger than the sum of its proper divisors (5521010123).

10443031221 is a wasteful number, since it uses less digits than its factorization.

10443031221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1589100.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 10443031221 its reverse (12213034401), we get a palindrome (22656065622).

The spelling of 10443031221 in words is "ten billion, four hundred forty-three million, thirty-one thousand, two hundred twenty-one".