10440421221 has 8 divisors (see below), whose sum is σ = 13942213600. Its totient is φ = 6949454832.

The previous prime is 10440421213. The next prime is 10440421289. The reversal of 10440421221 is 12212404401.

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

It is not a de Polignac number, because 10440421221 - 2³ = 10440421213 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 (10440425221) 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, 2704246 + ... + 2708103.

It is an arithmetic number, because the mean of its divisors is an integer number (1742776700).

Almost surely, 2^10440421221 is an apocalyptic number.

It is an amenable number.

10440421221 is a deficient number, since it is larger than the sum of its proper divisors (3501792379).

10440421221 is an equidigital number, since it uses as much as digits as its factorization.

10440421221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5412995.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 10440421221 its reverse (12212404401), we get a palindrome (22652825622).

The spelling of 10440421221 in words is "ten billion, four hundred forty million, four hundred twenty-one thousand, two hundred twenty-one".