10440333221 has 4 divisors (see below), whose sum is σ = 10683131712. Its totient is φ = 10197534732.

The previous prime is 10440333217. The next prime is 10440333227. The reversal of 10440333221 is 12233304401.

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 a cyclic number.

It is not a de Polignac number, because 10440333221 - 2² = 10440333217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10440333227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121399181 + ... + 121399266.

It is an arithmetic number, because the mean of its divisors is an integer number (2670782928).

Almost surely, 2^10440333221 is an apocalyptic number.

It is an amenable number.

10440333221 is a deficient number, since it is larger than the sum of its proper divisors (242798491).

10440333221 is an equidigital number, since it uses as much as digits as its factorization.

10440333221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242798490.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 10440333221 its reverse (12233304401), we get a palindrome (22673637622).

The spelling of 10440333221 in words is "ten billion, four hundred forty million, three hundred thirty-three thousand, two hundred twenty-one".