4430212121 has 16 divisors (see below), whose sum is σ = 4981435200. Its totient is φ = 3915168768.

The previous prime is 4430212117. The next prime is 4430212133. The reversal of 4430212121 is 1212120344.

It is a cyclic number.

It is not a de Polignac number, because 4430212121 - 2² = 4430212117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4430212093 and 4430212102.

It is not an unprimeable number, because it can be changed into a prime (4430212141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24191 + ... + 97188.

It is an arithmetic number, because the mean of its divisors is an integer number (311339700).

Almost surely, 2^4430212121 is an apocalyptic number.

It is an amenable number.

4430212121 is a deficient number, since it is larger than the sum of its proper divisors (551223079).

4430212121 is a wasteful number, since it uses less digits than its factorization.

4430212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121528.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 4430212121 is about 66559.8386491434. The cubic root of 4430212121 is about 1642.3845098252.

Adding to 4430212121 its reverse (1212120344), we get a palindrome (5642332465).

The spelling of 4430212121 in words is "four billion, four hundred thirty million, two hundred twelve thousand, one hundred twenty-one".