4404040011221 has 4 divisors (see below), whose sum is σ = 4413551977152. Its totient is φ = 4394528045292.

The previous prime is 4404040011197. The next prime is 4404040011223. The reversal of 4404040011221 is 1221100404044.

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 4404040011221 - 2³⁴ = 4386860142037 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 (4404040011223) 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, 4755982271 + ... + 4755983196.

It is an arithmetic number, because the mean of its divisors is an integer number (1103387994288).

Almost surely, 2^{4404040011221} is an apocalyptic number.

It is an amenable number.

4404040011221 is a deficient number, since it is larger than the sum of its proper divisors (9511965931).

4404040011221 is an equidigital number, since it uses as much as digits as its factorization.

4404040011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9511965930.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 4404040011221 its reverse (1221100404044), we get a palindrome (5625140415265).

The spelling of 4404040011221 in words is "four trillion, four hundred four billion, forty million, eleven thousand, two hundred twenty-one".