4131224221 has 8 divisors (see below), whose sum is σ = 4199272544. Its totient is φ = 4063363920.

The previous prime is 4131224197. The next prime is 4131224287. The reversal of 4131224221 is 1224221314.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4131224221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4131224192 and 4131224201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4131225221) 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, 2355 + ... + 90928.

It is an arithmetic number, because the mean of its divisors is an integer number (524909068).

Almost surely, 2^4131224221 is an apocalyptic number.

It is an amenable number.

4131224221 is a deficient number, since it is larger than the sum of its proper divisors (68048323).

4131224221 is an equidigital number, since it uses as much as digits as its factorization.

4131224221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94011.

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

The square root of 4131224221 is about 64274.6001232213. The cubic root of 4131224221 is about 1604.5734021495.

Adding to 4131224221 its reverse (1224221314), we get a palindrome (5355445535).

The spelling of 4131224221 in words is "four billion, one hundred thirty-one million, two hundred twenty-four thousand, two hundred twenty-one".