4404212121 has 8 divisors (see below), whose sum is σ = 5893034080. Its totient is φ = 2925765792.

The previous prime is 4404212119. The next prime is 4404212143. The reversal of 4404212121 is 1212124044.

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

It is not a de Polignac number, because 4404212121 - 2¹ = 4404212119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4404212171) 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, 2592916 + ... + 2594613.

It is an arithmetic number, because the mean of its divisors is an integer number (736629260).

Almost surely, 2^4404212121 is an apocalyptic number.

It is an amenable number.

4404212121 is a deficient number, since it is larger than the sum of its proper divisors (1488821959).

4404212121 is a wasteful number, since it uses less digits than its factorization.

4404212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5187815.

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

The square root of 4404212121 is about 66364.2382688146. The cubic root of 4404212121 is about 1639.1652653945.

Adding to 4404212121 its reverse (1212124044), we get a palindrome (5616336165).

The spelling of 4404212121 in words is "four billion, four hundred four million, two hundred twelve thousand, one hundred twenty-one".