4404210121 has 4 divisors (see below), whose sum is σ = 4404564612. Its totient is φ = 4403855632.

The previous prime is 4404210079. The next prime is 4404210149. The reversal of 4404210121 is 1210124044.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2409337225 + 1994872896 = 49085^2 + 44664^2 .

It is a cyclic number.

It is not a de Polignac number, because 4404210121 - 2⁹ = 4404209609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4404210721) 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, 157906 + ... + 183691.

It is an arithmetic number, because the mean of its divisors is an integer number (1101141153).

Almost surely, 2^4404210121 is an apocalyptic number.

It is an amenable number.

4404210121 is a deficient number, since it is larger than the sum of its proper divisors (354491).

4404210121 is a wasteful number, since it uses less digits than its factorization.

4404210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354490.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 4404210121 is about 66364.2232004564. The cubic root of 4404210121 is about 1639.1650172736.

Adding to 4404210121 its reverse (1210124044), we get a palindrome (5614334165).

The spelling of 4404210121 in words is "four billion, four hundred four million, two hundred ten thousand, one hundred twenty-one".