4211221125 has 64 divisors (see below), whose sum is σ = 7215436800. Its totient is φ = 2180001600.

The previous prime is 4211221057. The next prime is 4211221141. The reversal of 4211221125 is 5211221124.

It is not a de Polignac number, because 4211221125 - 2⁷ = 4211220997 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 2885646 + ... + 2887104.

It is an arithmetic number, because the mean of its divisors is an integer number (112741200).

Almost surely, 2^4211221125 is an apocalyptic number.

It is an amenable number.

4211221125 is a deficient number, since it is larger than the sum of its proper divisors (3004215675).

4211221125 is a wasteful number, since it uses less digits than its factorization.

4211221125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1699 (or 1689 counting only the distinct ones).

The product of its digits is 320, while the sum is 21.

The square root of 4211221125 is about 64893.9220959868. The cubic root of 4211221125 is about 1614.8642321496.

Adding to 4211221125 its reverse (5211221124), we get a palindrome (9422442249).

Subtracting 4211221125 from its reverse (5211221124), we obtain a palindrome (999999999).

The spelling of 4211221125 in words is "four billion, two hundred eleven million, two hundred twenty-one thousand, one hundred twenty-five".