4231214221 has 16 divisors (see below), whose sum is σ = 4591230336. Its totient is φ = 3876250176.

The previous prime is 4231214209. The next prime is 4231214287. The reversal of 4231214221 is 1224121324.

It is a cyclic number.

It is not a de Polignac number, because 4231214221 - 2²¹ = 4229117069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4231214192 and 4231214201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4231214321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 965391 + ... + 969763.

It is an arithmetic number, because the mean of its divisors is an integer number (286951896).

Almost surely, 2^4231214221 is an apocalyptic number.

It is an amenable number.

4231214221 is a deficient number, since it is larger than the sum of its proper divisors (360016115).

4231214221 is a wasteful number, since it uses less digits than its factorization.

4231214221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4932.

The product of its digits is 768, while the sum is 22.

The square root of 4231214221 is about 65047.7841359719. The cubic root of 4231214221 is about 1617.4157625619.

Adding to 4231214221 its reverse (1224121324), we get a palindrome (5455335545).

The spelling of 4231214221 in words is "four billion, two hundred thirty-one million, two hundred fourteen thousand, two hundred twenty-one".