4404223121 has 4 divisors (see below), whose sum is σ = 4404787200. Its totient is φ = 4403659044.

The previous prime is 4404223111. The next prime is 4404223163. The reversal of 4404223121 is 1213224044.

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 a de Polignac number, because none of the positive numbers 2^k-4404223121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4404223111) 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, 270161 + ... + 285998.

It is an arithmetic number, because the mean of its divisors is an integer number (1101196800).

Almost surely, 2^4404223121 is an apocalyptic number.

It is an amenable number.

4404223121 is a deficient number, since it is larger than the sum of its proper divisors (564079).

4404223121 is an equidigital number, since it uses as much as digits as its factorization.

4404223121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564078.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 4404223121 is about 66364.3211447235. The cubic root of 4404223121 is about 1639.1666300580.

Adding to 4404223121 its reverse (1213224044), we get a palindrome (5617447165).

The spelling of 4404223121 in words is "four billion, four hundred four million, two hundred twenty-three thousand, one hundred twenty-one".